21282978160

素因数分解:

$2^4\times 5^1\times {\mathrm{3793}}^1\times {\mathrm{70139}}^1$

素因数の和:73945

約数の個数: 40

約数和(自身を含む): 49496675760

約数和(自身を除く): 28213697600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3793, 7586, 15172, 18965, 30344, 37930, 60688, 70139, 75860, 140278, 151720, 280556, 303440, 350695, 561112, 701390, 1122224, 1402780, 2805560, 5611120, 266037227, 532074454, 1064148908, 1330186135, 2128297816, 2660372270, 4256595632, 5320744540, 10641489080, 21282978160]

約数ペア:

[(1, 21282978160), (2, 10641489080), (4, 5320744540), (5, 4256595632), (8, 2660372270), (10, 2128297816), (16, 1330186135), (20, 1064148908), (40, 532074454), (80, 266037227), (3793, 5611120), (7586, 2805560), (15172, 1402780), (18965, 1122224), (30344, 701390), (37930, 561112), (60688, 350695), (70139, 303440), (75860, 280556), (140278, 151720)]