81400760

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{349}}^1$

素因数の和:398

約数の個数: 128

約数和(自身を含む): 226800000

約数和(自身を除く): 145399240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 85, 98, 119, 136, 140, 170, 196, 238, 245, 280, 340, 343, 349, 392, 476, 490, 595, 680, 686, 698, 833, 952, 980, 1190, 1372, 1396, 1666, 1715, 1745, 1960, 2380, 2443, 2744, 2792, 3332, 3430, 3490, 4165, 4760, 4886, 5831, 5933, 6664, 6860, 6980, 8330, 9772, 11662, 11866, 12215, 13720, 13960, 16660, 17101, 19544, 23324, 23732, 24430, 29155, 29665, 33320, 34202, 41531, 46648, 47464, 48860, 58310, 59330, 68404, 83062, 85505, 97720, 116620, 118660, 119707, 136808, 166124, 171010, 207655, 233240, 237320, 239414, 290717, 332248, 342020, 415310, 478828, 581434, 598535, 684040, 830620, 957656, 1162868, 1197070, 1453585, 1661240, 2035019, 2325736, 2394140, 2907170, 4070038, 4788280, 5814340, 8140076, 10175095, 11628680, 16280152, 20350190, 40700380, 81400760]

約数ペア:

[(1, 81400760), (2, 40700380), (4, 20350190), (5, 16280152), (7, 11628680), (8, 10175095), (10, 8140076), (14, 5814340), (17, 4788280), (20, 4070038), (28, 2907170), (34, 2394140), (35, 2325736), (40, 2035019), (49, 1661240), (56, 1453585), (68, 1197070), (70, 1162868), (85, 957656), (98, 830620), (119, 684040), (136, 598535), (140, 581434), (170, 478828), (196, 415310), (238, 342020), (245, 332248), (280, 290717), (340, 239414), (343, 237320), (349, 233240), (392, 207655), (476, 171010), (490, 166124), (595, 136808), (680, 119707), (686, 118660), (698, 116620), (833, 97720), (952, 85505), (980, 83062), (1190, 68404), (1372, 59330), (1396, 58310), (1666, 48860), (1715, 47464), (1745, 46648), (1960, 41531), (2380, 34202), (2443, 33320), (2744, 29665), (2792, 29155), (3332, 24430), (3430, 23732), (3490, 23324), (4165, 19544), (4760, 17101), (4886, 16660), (5831, 13960), (5933, 13720), (6664, 12215), (6860, 11866), (6980, 11662), (8330, 9772)]