19993960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{101}}^2$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 52854390

約数和(自身を除く): 32860430

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 101, 140, 196, 202, 245, 280, 392, 404, 490, 505, 707, 808, 980, 1010, 1414, 1960, 2020, 2828, 3535, 4040, 4949, 5656, 7070, 9898, 10201, 14140, 19796, 20402, 24745, 28280, 39592, 40804, 49490, 51005, 71407, 81608, 98980, 102010, 142814, 197960, 204020, 285628, 357035, 408040, 499849, 571256, 714070, 999698, 1428140, 1999396, 2499245, 2856280, 3998792, 4998490, 9996980, 19993960]

約数ペア:

[(1, 19993960), (2, 9996980), (4, 4998490), (5, 3998792), (7, 2856280), (8, 2499245), (10, 1999396), (14, 1428140), (20, 999698), (28, 714070), (35, 571256), (40, 499849), (49, 408040), (56, 357035), (70, 285628), (98, 204020), (101, 197960), (140, 142814), (196, 102010), (202, 98980), (245, 81608), (280, 71407), (392, 51005), (404, 49490), (490, 40804), (505, 39592), (707, 28280), (808, 24745), (980, 20402), (1010, 19796), (1414, 14140), (1960, 10201), (2020, 9898), (2828, 7070), (3535, 5656), (4040, 4949)]