87804620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71971}}^1$

素因数の和:72041

約数の個数: 24

約数和(自身を含む): 187415088

約数和(自身を除く): 99610468

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 71971, 143942, 287884, 359855, 719710, 1439420, 4390231, 8780462, 17560924, 21951155, 43902310, 87804620]

約数ペア:

[(1, 87804620), (2, 43902310), (4, 21951155), (5, 17560924), (10, 8780462), (20, 4390231), (61, 1439420), (122, 719710), (244, 359855), (305, 287884), (610, 143942), (1220, 71971)]