2780080

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:122

約数の個数: 80

約数和(自身を含む): 7142400

約数和(自身を除く): 4362320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 59, 62, 76, 80, 95, 118, 124, 152, 155, 190, 236, 248, 295, 304, 310, 380, 472, 496, 589, 590, 620, 760, 944, 1121, 1178, 1180, 1240, 1520, 1829, 2242, 2356, 2360, 2480, 2945, 3658, 4484, 4712, 4720, 5605, 5890, 7316, 8968, 9145, 9424, 11210, 11780, 14632, 17936, 18290, 22420, 23560, 29264, 34751, 36580, 44840, 47120, 69502, 73160, 89680, 139004, 146320, 173755, 278008, 347510, 556016, 695020, 1390040, 2780080]

約数ペア:

[(1, 2780080), (2, 1390040), (4, 695020), (5, 556016), (8, 347510), (10, 278008), (16, 173755), (19, 146320), (20, 139004), (31, 89680), (38, 73160), (40, 69502), (59, 47120), (62, 44840), (76, 36580), (80, 34751), (95, 29264), (118, 23560), (124, 22420), (152, 18290), (155, 17936), (190, 14632), (236, 11780), (248, 11210), (295, 9424), (304, 9145), (310, 8968), (380, 7316), (472, 5890), (496, 5605), (589, 4720), (590, 4712), (620, 4484), (760, 3658), (944, 2945), (1121, 2480), (1178, 2360), (1180, 2356), (1240, 2242), (1520, 1829)]