405470260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{389}}^1$

素因数の和:641

約数の個数: 96

約数和(自身を含む): 972316800

約数和(自身を除く): 566846540

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 211, 247, 260, 380, 389, 422, 494, 778, 844, 988, 1055, 1235, 1556, 1945, 2110, 2470, 2743, 3890, 4009, 4220, 4940, 5057, 5486, 7391, 7780, 8018, 10114, 10972, 13715, 14782, 16036, 20045, 20228, 25285, 27430, 29564, 36955, 40090, 50570, 52117, 54860, 73910, 80180, 82079, 96083, 101140, 104234, 147820, 164158, 192166, 208468, 260585, 328316, 384332, 410395, 480415, 521170, 820790, 960830, 1042340, 1067027, 1559501, 1641580, 1921660, 2134054, 3119002, 4268108, 5335135, 6238004, 7797505, 10670270, 15595010, 20273513, 21340540, 31190020, 40547026, 81094052, 101367565, 202735130, 405470260]

約数ペア:

[(1, 405470260), (2, 202735130), (4, 101367565), (5, 81094052), (10, 40547026), (13, 31190020), (19, 21340540), (20, 20273513), (26, 15595010), (38, 10670270), (52, 7797505), (65, 6238004), (76, 5335135), (95, 4268108), (130, 3119002), (190, 2134054), (211, 1921660), (247, 1641580), (260, 1559501), (380, 1067027), (389, 1042340), (422, 960830), (494, 820790), (778, 521170), (844, 480415), (988, 410395), (1055, 384332), (1235, 328316), (1556, 260585), (1945, 208468), (2110, 192166), (2470, 164158), (2743, 147820), (3890, 104234), (4009, 101140), (4220, 96083), (4940, 82079), (5057, 80180), (5486, 73910), (7391, 54860), (7780, 52117), (8018, 50570), (10114, 40090), (10972, 36955), (13715, 29564), (14782, 27430), (16036, 25285), (20045, 20228)]