640360040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{14281}}^1$

素因数の和:14370

約数の個数: 64

約数和(自身を含む): 1542456000

約数和(自身を除く): 902095960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 59, 76, 95, 118, 152, 190, 236, 295, 380, 472, 590, 760, 1121, 1180, 2242, 2360, 4484, 5605, 8968, 11210, 14281, 22420, 28562, 44840, 57124, 71405, 114248, 142810, 271339, 285620, 542678, 571240, 842579, 1085356, 1356695, 1685158, 2170712, 2713390, 3370316, 4212895, 5426780, 6740632, 8425790, 10853560, 16009001, 16851580, 32018002, 33703160, 64036004, 80045005, 128072008, 160090010, 320180020, 640360040]

約数ペア:

[(1, 640360040), (2, 320180020), (4, 160090010), (5, 128072008), (8, 80045005), (10, 64036004), (19, 33703160), (20, 32018002), (38, 16851580), (40, 16009001), (59, 10853560), (76, 8425790), (95, 6740632), (118, 5426780), (152, 4212895), (190, 3370316), (236, 2713390), (295, 2170712), (380, 1685158), (472, 1356695), (590, 1085356), (760, 842579), (1121, 571240), (1180, 542678), (2242, 285620), (2360, 271339), (4484, 142810), (5605, 114248), (8968, 71405), (11210, 57124), (14281, 44840), (22420, 28562)]