408021580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{18199}}^1$

素因数の和:18286

約数の個数: 48

約数和(自身を含む): 917280000

約数和(自身を除く): 509258420

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 590, 1121, 1180, 2242, 4484, 5605, 11210, 18199, 22420, 36398, 72796, 90995, 181990, 345781, 363980, 691562, 1073741, 1383124, 1728905, 2147482, 3457810, 4294964, 5368705, 6915620, 10737410, 20401079, 21474820, 40802158, 81604316, 102005395, 204010790, 408021580]

約数ペア:

[(1, 408021580), (2, 204010790), (4, 102005395), (5, 81604316), (10, 40802158), (19, 21474820), (20, 20401079), (38, 10737410), (59, 6915620), (76, 5368705), (95, 4294964), (118, 3457810), (190, 2147482), (236, 1728905), (295, 1383124), (380, 1073741), (590, 691562), (1121, 363980), (1180, 345781), (2242, 181990), (4484, 90995), (5605, 72796), (11210, 36398), (18199, 22420)]