19850540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{317}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 43593984

約数和(自身を除く): 23743444

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 101, 124, 155, 202, 310, 317, 404, 505, 620, 634, 1010, 1268, 1585, 2020, 3131, 3170, 6262, 6340, 9827, 12524, 15655, 19654, 31310, 32017, 39308, 49135, 62620, 64034, 98270, 128068, 160085, 196540, 320170, 640340, 992527, 1985054, 3970108, 4962635, 9925270, 19850540]

約数ペア:

[(1, 19850540), (2, 9925270), (4, 4962635), (5, 3970108), (10, 1985054), (20, 992527), (31, 640340), (62, 320170), (101, 196540), (124, 160085), (155, 128068), (202, 98270), (310, 64034), (317, 62620), (404, 49135), (505, 39308), (620, 32017), (634, 31310), (1010, 19654), (1268, 15655), (1585, 12524), (2020, 9827), (3131, 6340), (3170, 6262)]