128460420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64879}}^1$

素因数の和:64905

約数の個数: 72

約数和(自身を含む): 425093760

約数和(自身を除く): 296633340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 64879, 129758, 194637, 259516, 324395, 389274, 583911, 648790, 713669, 778548, 973185, 1167822, 1297580, 1427338, 1946370, 2141007, 2335644, 2854676, 2919555, 3568345, 3892740, 4282014, 5839110, 6423021, 7136690, 8564028, 10705035, 11678220, 12846042, 14273380, 21410070, 25692084, 32115105, 42820140, 64230210, 128460420]

約数ペア:

[(1, 128460420), (2, 64230210), (3, 42820140), (4, 32115105), (5, 25692084), (6, 21410070), (9, 14273380), (10, 12846042), (11, 11678220), (12, 10705035), (15, 8564028), (18, 7136690), (20, 6423021), (22, 5839110), (30, 4282014), (33, 3892740), (36, 3568345), (44, 2919555), (45, 2854676), (55, 2335644), (60, 2141007), (66, 1946370), (90, 1427338), (99, 1297580), (110, 1167822), (132, 973185), (165, 778548), (180, 713669), (198, 648790), (220, 583911), (330, 389274), (396, 324395), (495, 259516), (660, 194637), (990, 129758), (1980, 64879)]