208589980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{10357}}^1$

素因数の和:10438

約数の個数: 48

約数和(自身を含む): 469838880

約数和(自身を除く): 261248900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 53, 76, 95, 106, 190, 212, 265, 380, 530, 1007, 1060, 2014, 4028, 5035, 10070, 10357, 20140, 20714, 41428, 51785, 103570, 196783, 207140, 393566, 548921, 787132, 983915, 1097842, 1967830, 2195684, 2744605, 3935660, 5489210, 10429499, 10978420, 20858998, 41717996, 52147495, 104294990, 208589980]

約数ペア:

[(1, 208589980), (2, 104294990), (4, 52147495), (5, 41717996), (10, 20858998), (19, 10978420), (20, 10429499), (38, 5489210), (53, 3935660), (76, 2744605), (95, 2195684), (106, 1967830), (190, 1097842), (212, 983915), (265, 787132), (380, 548921), (530, 393566), (1007, 207140), (1060, 196783), (2014, 103570), (4028, 51785), (5035, 41428), (10070, 20714), (10357, 20140)]