21573960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:207

約数の個数: 128

約数和(自身を含む): 68618880

約数和(自身を除く): 47044920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 43, 60, 74, 86, 111, 113, 120, 129, 148, 172, 185, 215, 222, 226, 258, 296, 339, 344, 370, 430, 444, 452, 516, 555, 565, 645, 678, 740, 860, 888, 904, 1032, 1110, 1130, 1290, 1356, 1480, 1591, 1695, 1720, 2220, 2260, 2580, 2712, 3182, 3390, 4181, 4440, 4520, 4773, 4859, 5160, 6364, 6780, 7955, 8362, 9546, 9718, 12543, 12728, 13560, 14577, 15910, 16724, 19092, 19436, 20905, 23865, 24295, 25086, 29154, 31820, 33448, 38184, 38872, 41810, 47730, 48590, 50172, 58308, 62715, 63640, 72885, 83620, 95460, 97180, 100344, 116616, 125430, 145770, 167240, 179783, 190920, 194360, 250860, 291540, 359566, 501720, 539349, 583080, 719132, 898915, 1078698, 1438264, 1797830, 2157396, 2696745, 3595660, 4314792, 5393490, 7191320, 10786980, 21573960]

約数ペア:

[(1, 21573960), (2, 10786980), (3, 7191320), (4, 5393490), (5, 4314792), (6, 3595660), (8, 2696745), (10, 2157396), (12, 1797830), (15, 1438264), (20, 1078698), (24, 898915), (30, 719132), (37, 583080), (40, 539349), (43, 501720), (60, 359566), (74, 291540), (86, 250860), (111, 194360), (113, 190920), (120, 179783), (129, 167240), (148, 145770), (172, 125430), (185, 116616), (215, 100344), (222, 97180), (226, 95460), (258, 83620), (296, 72885), (339, 63640), (344, 62715), (370, 58308), (430, 50172), (444, 48590), (452, 47730), (516, 41810), (555, 38872), (565, 38184), (645, 33448), (678, 31820), (740, 29154), (860, 25086), (888, 24295), (904, 23865), (1032, 20905), (1110, 19436), (1130, 19092), (1290, 16724), (1356, 15910), (1480, 14577), (1591, 13560), (1695, 12728), (1720, 12543), (2220, 9718), (2260, 9546), (2580, 8362), (2712, 7955), (3182, 6780), (3390, 6364), (4181, 5160), (4440, 4859), (4520, 4773)]