20994870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:178

約数の個数: 96

約数和(自身を含む): 56445984

約数和(自身を除く): 35451114

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 41, 65, 78, 82, 101, 123, 130, 169, 195, 202, 205, 246, 303, 338, 390, 410, 505, 507, 533, 606, 615, 845, 1010, 1014, 1066, 1230, 1313, 1515, 1599, 1690, 2535, 2626, 2665, 3030, 3198, 3939, 4141, 5070, 5330, 6565, 6929, 7878, 7995, 8282, 12423, 13130, 13858, 15990, 17069, 19695, 20705, 20787, 24846, 34138, 34645, 39390, 41410, 41574, 51207, 53833, 62115, 69290, 85345, 102414, 103935, 107666, 124230, 161499, 170690, 207870, 256035, 269165, 322998, 512070, 538330, 699829, 807495, 1399658, 1614990, 2099487, 3499145, 4198974, 6998290, 10497435, 20994870]

約数ペア:

[(1, 20994870), (2, 10497435), (3, 6998290), (5, 4198974), (6, 3499145), (10, 2099487), (13, 1614990), (15, 1399658), (26, 807495), (30, 699829), (39, 538330), (41, 512070), (65, 322998), (78, 269165), (82, 256035), (101, 207870), (123, 170690), (130, 161499), (169, 124230), (195, 107666), (202, 103935), (205, 102414), (246, 85345), (303, 69290), (338, 62115), (390, 53833), (410, 51207), (505, 41574), (507, 41410), (533, 39390), (606, 34645), (615, 34138), (845, 24846), (1010, 20787), (1014, 20705), (1066, 19695), (1230, 17069), (1313, 15990), (1515, 13858), (1599, 13130), (1690, 12423), (2535, 8282), (2626, 7995), (2665, 7878), (3030, 6929), (3198, 6565), (3939, 5330), (4141, 5070)]