210502460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{157}}^2$

素因数の和:391

約数の個数: 72

約数和(自身を含む): 516779424

約数和(自身を除く): 306276964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 157, 244, 305, 314, 427, 610, 628, 785, 854, 1099, 1220, 1570, 1708, 2135, 2198, 3140, 4270, 4396, 5495, 8540, 9577, 10990, 19154, 21980, 24649, 38308, 47885, 49298, 67039, 95770, 98596, 123245, 134078, 172543, 191540, 246490, 268156, 335195, 345086, 492980, 670390, 690172, 862715, 1340780, 1503589, 1725430, 3007178, 3450860, 6014356, 7517945, 10525123, 15035890, 21050246, 30071780, 42100492, 52625615, 105251230, 210502460]

約数ペア:

[(1, 210502460), (2, 105251230), (4, 52625615), (5, 42100492), (7, 30071780), (10, 21050246), (14, 15035890), (20, 10525123), (28, 7517945), (35, 6014356), (61, 3450860), (70, 3007178), (122, 1725430), (140, 1503589), (157, 1340780), (244, 862715), (305, 690172), (314, 670390), (427, 492980), (610, 345086), (628, 335195), (785, 268156), (854, 246490), (1099, 191540), (1220, 172543), (1570, 134078), (1708, 123245), (2135, 98596), (2198, 95770), (3140, 67039), (4270, 49298), (4396, 47885), (5495, 38308), (8540, 24649), (9577, 21980), (10990, 19154)]