905944780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{2459}}^1$

素因数の和:2603

約数の個数: 72

約数和(自身を含む): 2079831600

約数和(自身を除く): 1173886820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 169, 218, 260, 338, 436, 545, 676, 845, 1090, 1417, 1690, 2180, 2459, 2834, 3380, 4918, 5668, 7085, 9836, 12295, 14170, 18421, 24590, 28340, 31967, 36842, 49180, 63934, 73684, 92105, 127868, 159835, 184210, 268031, 319670, 368420, 415571, 536062, 639340, 831142, 1072124, 1340155, 1662284, 2077855, 2680310, 3484403, 4155710, 5360620, 6968806, 8311420, 13937612, 17422015, 34844030, 45297239, 69688060, 90594478, 181188956, 226486195, 452972390, 905944780]

約数ペア:

[(1, 905944780), (2, 452972390), (4, 226486195), (5, 181188956), (10, 90594478), (13, 69688060), (20, 45297239), (26, 34844030), (52, 17422015), (65, 13937612), (109, 8311420), (130, 6968806), (169, 5360620), (218, 4155710), (260, 3484403), (338, 2680310), (436, 2077855), (545, 1662284), (676, 1340155), (845, 1072124), (1090, 831142), (1417, 639340), (1690, 536062), (2180, 415571), (2459, 368420), (2834, 319670), (3380, 268031), (4918, 184210), (5668, 159835), (7085, 127868), (9836, 92105), (12295, 73684), (14170, 63934), (18421, 49180), (24590, 36842), (28340, 31967)]