20439367640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{491}}^1\times {\mathrm{569}}^1$

素因数の和:1161

約数の個数: 128

約数和(自身を含む): 48460032000

約数和(自身を除く): 28020664360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 59, 62, 118, 124, 155, 236, 248, 295, 310, 472, 491, 569, 590, 620, 982, 1138, 1180, 1240, 1829, 1964, 2276, 2360, 2455, 2845, 3658, 3928, 4552, 4910, 5690, 7316, 9145, 9820, 11380, 14632, 15221, 17639, 18290, 19640, 22760, 28969, 30442, 33571, 35278, 36580, 57938, 60884, 67142, 70556, 73160, 76105, 88195, 115876, 121768, 134284, 141112, 144845, 152210, 167855, 176390, 231752, 268568, 279379, 289690, 304420, 335710, 352780, 558758, 579380, 608840, 671420, 705560, 898039, 1040701, 1117516, 1158760, 1342840, 1396895, 1796078, 2081402, 2235032, 2793790, 3592156, 4162804, 4490195, 5203505, 5587580, 7184312, 8325608, 8660749, 8980390, 10407010, 11175160, 16483361, 17321498, 17960780, 20814020, 32966722, 34642996, 35921560, 41628040, 43303745, 65933444, 69285992, 82416805, 86607490, 131866888, 164833610, 173214980, 329667220, 346429960, 510984191, 659334440, 1021968382, 2043936764, 2554920955, 4087873528, 5109841910, 10219683820, 20439367640]

約数ペア:

[(1, 20439367640), (2, 10219683820), (4, 5109841910), (5, 4087873528), (8, 2554920955), (10, 2043936764), (20, 1021968382), (31, 659334440), (40, 510984191), (59, 346429960), (62, 329667220), (118, 173214980), (124, 164833610), (155, 131866888), (236, 86607490), (248, 82416805), (295, 69285992), (310, 65933444), (472, 43303745), (491, 41628040), (569, 35921560), (590, 34642996), (620, 32966722), (982, 20814020), (1138, 17960780), (1180, 17321498), (1240, 16483361), (1829, 11175160), (1964, 10407010), (2276, 8980390), (2360, 8660749), (2455, 8325608), (2845, 7184312), (3658, 5587580), (3928, 5203505), (4552, 4490195), (4910, 4162804), (5690, 3592156), (7316, 2793790), (9145, 2235032), (9820, 2081402), (11380, 1796078), (14632, 1396895), (15221, 1342840), (17639, 1158760), (18290, 1117516), (19640, 1040701), (22760, 898039), (28969, 705560), (30442, 671420), (33571, 608840), (35278, 579380), (36580, 558758), (57938, 352780), (60884, 335710), (67142, 304420), (70556, 289690), (73160, 279379), (76105, 268568), (88195, 231752), (115876, 176390), (121768, 167855), (134284, 152210), (141112, 144845)]