640727520

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{839}}^1$

素因数の和:937

約数の個数: 192

約数和(自身を含む): 2123573760

約数和(自身を除く): 1482846240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 37, 40, 43, 48, 60, 74, 80, 86, 96, 111, 120, 129, 148, 160, 172, 185, 215, 222, 240, 258, 296, 344, 370, 430, 444, 480, 516, 555, 592, 645, 688, 740, 839, 860, 888, 1032, 1110, 1184, 1290, 1376, 1480, 1591, 1678, 1720, 1776, 2064, 2220, 2517, 2580, 2960, 3182, 3356, 3440, 3552, 4128, 4195, 4440, 4773, 5034, 5160, 5920, 6364, 6712, 6880, 7955, 8390, 8880, 9546, 10068, 10320, 12585, 12728, 13424, 15910, 16780, 17760, 19092, 20136, 20640, 23865, 25170, 25456, 26848, 31043, 31820, 33560, 36077, 38184, 40272, 47730, 50340, 50912, 62086, 63640, 67120, 72154, 76368, 80544, 93129, 95460, 100680, 108231, 124172, 127280, 134240, 144308, 152736, 155215, 180385, 186258, 190920, 201360, 216462, 248344, 254560, 288616, 310430, 360770, 372516, 381840, 402720, 432924, 465645, 496688, 541155, 577232, 620860, 721540, 745032, 763680, 865848, 931290, 993376, 1082310, 1154464, 1241720, 1334849, 1443080, 1490064, 1731696, 1862580, 2164620, 2483440, 2669698, 2886160, 2980128, 3463392, 3725160, 4004547, 4329240, 4966880, 5339396, 5772320, 6674245, 7450320, 8009094, 8658480, 10678792, 13348490, 14900640, 16018188, 17316960, 20022735, 21357584, 26696980, 32036376, 40045470, 42715168, 53393960, 64072752, 80090940, 106787920, 128145504, 160181880, 213575840, 320363760, 640727520]

約数ペア:

[(1, 640727520), (2, 320363760), (3, 213575840), (4, 160181880), (5, 128145504), (6, 106787920), (8, 80090940), (10, 64072752), (12, 53393960), (15, 42715168), (16, 40045470), (20, 32036376), (24, 26696980), (30, 21357584), (32, 20022735), (37, 17316960), (40, 16018188), (43, 14900640), (48, 13348490), (60, 10678792), (74, 8658480), (80, 8009094), (86, 7450320), (96, 6674245), (111, 5772320), (120, 5339396), (129, 4966880), (148, 4329240), (160, 4004547), (172, 3725160), (185, 3463392), (215, 2980128), (222, 2886160), (240, 2669698), (258, 2483440), (296, 2164620), (344, 1862580), (370, 1731696), (430, 1490064), (444, 1443080), (480, 1334849), (516, 1241720), (555, 1154464), (592, 1082310), (645, 993376), (688, 931290), (740, 865848), (839, 763680), (860, 745032), (888, 721540), (1032, 620860), (1110, 577232), (1184, 541155), (1290, 496688), (1376, 465645), (1480, 432924), (1591, 402720), (1678, 381840), (1720, 372516), (1776, 360770), (2064, 310430), (2220, 288616), (2517, 254560), (2580, 248344), (2960, 216462), (3182, 201360), (3356, 190920), (3440, 186258), (3552, 180385), (4128, 155215), (4195, 152736), (4440, 144308), (4773, 134240), (5034, 127280), (5160, 124172), (5920, 108231), (6364, 100680), (6712, 95460), (6880, 93129), (7955, 80544), (8390, 76368), (8880, 72154), (9546, 67120), (10068, 63640), (10320, 62086), (12585, 50912), (12728, 50340), (13424, 47730), (15910, 40272), (16780, 38184), (17760, 36077), (19092, 33560), (20136, 31820), (20640, 31043), (23865, 26848), (25170, 25456)]