20978010

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:220

約数の個数: 96

約数和(自身を含む): 57627648

約数和(自身を除く): 36649638

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 73, 90, 93, 103, 146, 155, 186, 206, 219, 279, 309, 310, 365, 438, 465, 515, 558, 618, 657, 730, 927, 930, 1030, 1095, 1314, 1395, 1545, 1854, 2190, 2263, 2790, 3090, 3193, 3285, 4526, 4635, 6386, 6570, 6789, 7519, 9270, 9579, 11315, 13578, 15038, 15965, 19158, 20367, 22557, 22630, 28737, 31930, 33945, 37595, 40734, 45114, 47895, 57474, 67671, 67890, 75190, 95790, 101835, 112785, 135342, 143685, 203670, 225570, 233089, 287370, 338355, 466178, 676710, 699267, 1165445, 1398534, 2097801, 2330890, 3496335, 4195602, 6992670, 10489005, 20978010]

約数ペア:

[(1, 20978010), (2, 10489005), (3, 6992670), (5, 4195602), (6, 3496335), (9, 2330890), (10, 2097801), (15, 1398534), (18, 1165445), (30, 699267), (31, 676710), (45, 466178), (62, 338355), (73, 287370), (90, 233089), (93, 225570), (103, 203670), (146, 143685), (155, 135342), (186, 112785), (206, 101835), (219, 95790), (279, 75190), (309, 67890), (310, 67671), (365, 57474), (438, 47895), (465, 45114), (515, 40734), (558, 37595), (618, 33945), (657, 31930), (730, 28737), (927, 22630), (930, 22557), (1030, 20367), (1095, 19158), (1314, 15965), (1395, 15038), (1545, 13578), (1854, 11315), (2190, 9579), (2263, 9270), (2790, 7519), (3090, 6789), (3193, 6570), (3285, 6386), (4526, 4635)]