20020452940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1\times {\mathrm{35251}}^1$

素因数の和:35722

約数の個数: 48

約数和(自身を含む): 42729654240

約数和(自身を除く): 22709201300

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 389, 730, 778, 1460, 1556, 1945, 3890, 7780, 28397, 35251, 56794, 70502, 113588, 141004, 141985, 176255, 283970, 352510, 567940, 705020, 2573323, 5146646, 10293292, 12866615, 13712639, 25733230, 27425278, 51466460, 54850556, 68563195, 137126390, 274252780, 1001022647, 2002045294, 4004090588, 5005113235, 10010226470, 20020452940]

約数ペア:

[(1, 20020452940), (2, 10010226470), (4, 5005113235), (5, 4004090588), (10, 2002045294), (20, 1001022647), (73, 274252780), (146, 137126390), (292, 68563195), (365, 54850556), (389, 51466460), (730, 27425278), (778, 25733230), (1460, 13712639), (1556, 12866615), (1945, 10293292), (3890, 5146646), (7780, 2573323), (28397, 705020), (35251, 567940), (56794, 352510), (70502, 283970), (113588, 176255), (141004, 141985)]