20641504

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{59}}^1$

素因数の和:140

約数の個数: 72

約数和(自身を含む): 46093320

約数和(自身を除く): 25451816

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 59, 104, 116, 118, 208, 232, 236, 377, 416, 464, 472, 754, 767, 841, 928, 944, 1508, 1534, 1682, 1711, 1888, 3016, 3068, 3364, 3422, 6032, 6136, 6728, 6844, 10933, 12064, 12272, 13456, 13688, 21866, 22243, 24544, 26912, 27376, 43732, 44486, 49619, 54752, 87464, 88972, 99238, 174928, 177944, 198476, 349856, 355888, 396952, 645047, 711776, 793904, 1290094, 1587808, 2580188, 5160376, 10320752, 20641504]

約数ペア:

[(1, 20641504), (2, 10320752), (4, 5160376), (8, 2580188), (13, 1587808), (16, 1290094), (26, 793904), (29, 711776), (32, 645047), (52, 396952), (58, 355888), (59, 349856), (104, 198476), (116, 177944), (118, 174928), (208, 99238), (232, 88972), (236, 87464), (377, 54752), (416, 49619), (464, 44486), (472, 43732), (754, 27376), (767, 26912), (841, 24544), (928, 22243), (944, 21866), (1508, 13688), (1534, 13456), (1682, 12272), (1711, 12064), (1888, 10933), (3016, 6844), (3068, 6728), (3364, 6136), (3422, 6032)]