21598820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{503}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 26664220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 113, 190, 226, 380, 452, 503, 565, 1006, 1130, 2012, 2147, 2260, 2515, 4294, 5030, 8588, 9557, 10060, 10735, 19114, 21470, 38228, 42940, 47785, 56839, 95570, 113678, 191140, 227356, 284195, 568390, 1079941, 1136780, 2159882, 4319764, 5399705, 10799410, 21598820]

約数ペア:

[(1, 21598820), (2, 10799410), (4, 5399705), (5, 4319764), (10, 2159882), (19, 1136780), (20, 1079941), (38, 568390), (76, 284195), (95, 227356), (113, 191140), (190, 113678), (226, 95570), (380, 56839), (452, 47785), (503, 42940), (565, 38228), (1006, 21470), (1130, 19114), (2012, 10735), (2147, 10060), (2260, 9557), (2515, 8588), (4294, 5030)]