20468760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13121}}^1$

素因数の和:13148

約数の個数: 64

約数和(自身を含む): 66134880

約数和(自身を除く): 45666120

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, 13121, 26242, 39363, 52484, 65605, 78726, 104968, 131210, 157452, 170573, 196815, 262420, 314904, 341146, 393630, 511719, 524840, 682292, 787260, 852865, 1023438, 1364584, 1574520, 1705730, 2046876, 2558595, 3411460, 4093752, 5117190, 6822920, 10234380, 20468760]

約数ペア:

[(1, 20468760), (2, 10234380), (3, 6822920), (4, 5117190), (5, 4093752), (6, 3411460), (8, 2558595), (10, 2046876), (12, 1705730), (13, 1574520), (15, 1364584), (20, 1023438), (24, 852865), (26, 787260), (30, 682292), (39, 524840), (40, 511719), (52, 393630), (60, 341146), (65, 314904), (78, 262420), (104, 196815), (120, 170573), (130, 157452), (156, 131210), (195, 104968), (260, 78726), (312, 65605), (390, 52484), (520, 39363), (780, 26242), (1560, 13121)]