20808320520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13338667}}^1$

素因数の和:13338694

約数の個数: 64

約数和(自身を含む): 67226886720

約数和(自身を除く): 46418566200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13338667, 26677334, 40016001, 53354668, 66693335, 80032002, 106709336, 133386670, 160064004, 173402671, 200080005, 266773340, 320128008, 346805342, 400160010, 520208013, 533546680, 693610684, 800320020, 867013355, 1040416026, 1387221368, 1600640040, 1734026710, 2080832052, 2601040065, 3468053420, 4161664104, 5202080130, 6936106840, 10404160260, 20808320520]

約数ペア:

[(1, 20808320520), (2, 10404160260), (3, 6936106840), (4, 5202080130), (5, 4161664104), (6, 3468053420), (8, 2601040065), (10, 2080832052), (12, 1734026710), (13, 1600640040), (15, 1387221368), (20, 1040416026), (24, 867013355), (26, 800320020), (30, 693610684), (39, 533546680), (40, 520208013), (52, 400160010), (60, 346805342), (65, 320128008), (78, 266773340), (104, 200080005), (120, 173402671), (130, 160064004), (156, 133386670), (195, 106709336), (260, 80032002), (312, 66693335), (390, 53354668), (520, 40016001), (780, 26677334), (1560, 13338667)]