213715940

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{283}}^1\times {\mathrm{619}}^1$

素因数の和:972

約数の個数: 48

約数和(自身を含む): 458512320

約数和(自身を除く): 244796380

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 283, 305, 566, 610, 619, 1132, 1220, 1238, 1415, 2476, 2830, 3095, 5660, 6190, 12380, 17263, 34526, 37759, 69052, 75518, 86315, 151036, 172630, 175177, 188795, 345260, 350354, 377590, 700708, 755180, 875885, 1751770, 3503540, 10685797, 21371594, 42743188, 53428985, 106857970, 213715940]

約数ペア:

[(1, 213715940), (2, 106857970), (4, 53428985), (5, 42743188), (10, 21371594), (20, 10685797), (61, 3503540), (122, 1751770), (244, 875885), (283, 755180), (305, 700708), (566, 377590), (610, 350354), (619, 345260), (1132, 188795), (1220, 175177), (1238, 172630), (1415, 151036), (2476, 86315), (2830, 75518), (3095, 69052), (5660, 37759), (6190, 34526), (12380, 17263)]