19349980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3917}}^1$

素因数の和:3958

約数の個数: 48

約数和(自身を含む): 46075680

約数和(自身を除く): 26725700

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 3917, 4940, 7834, 15668, 19585, 39170, 50921, 74423, 78340, 101842, 148846, 203684, 254605, 297692, 372115, 509210, 744230, 967499, 1018420, 1488460, 1934998, 3869996, 4837495, 9674990, 19349980]

約数ペア:

[(1, 19349980), (2, 9674990), (4, 4837495), (5, 3869996), (10, 1934998), (13, 1488460), (19, 1018420), (20, 967499), (26, 744230), (38, 509210), (52, 372115), (65, 297692), (76, 254605), (95, 203684), (130, 148846), (190, 101842), (247, 78340), (260, 74423), (380, 50921), (494, 39170), (988, 19585), (1235, 15668), (2470, 7834), (3917, 4940)]