27720404920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2805709}}^1$

素因数の和:2805752

約数の個数: 64

約数和(自身を含む): 70703892000

約数和(自身を除く): 42983487080

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 9880, 2805709, 5611418, 11222836, 14028545, 22445672, 28057090, 36474217, 53308471, 56114180, 72948434, 106616942, 112228360, 145896868, 182371085, 213233884, 266542355, 291793736, 364742170, 426467768, 533084710, 693010123, 729484340, 1066169420, 1386020246, 1458968680, 2132338840, 2772040492, 3465050615, 5544080984, 6930101230, 13860202460, 27720404920]

約数ペア:

[(1, 27720404920), (2, 13860202460), (4, 6930101230), (5, 5544080984), (8, 3465050615), (10, 2772040492), (13, 2132338840), (19, 1458968680), (20, 1386020246), (26, 1066169420), (38, 729484340), (40, 693010123), (52, 533084710), (65, 426467768), (76, 364742170), (95, 291793736), (104, 266542355), (130, 213233884), (152, 182371085), (190, 145896868), (247, 112228360), (260, 106616942), (380, 72948434), (494, 56114180), (520, 53308471), (760, 36474217), (988, 28057090), (1235, 22445672), (1976, 14028545), (2470, 11222836), (4940, 5611418), (9880, 2805709)]