20511108

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{191}}^1$

素因数の和:377

約数の個数: 72

約数和(自身を含む): 55211520

約数和(自身を除く): 34700412

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 157, 171, 191, 228, 314, 342, 382, 471, 573, 628, 684, 764, 942, 1146, 1413, 1719, 1884, 2292, 2826, 2983, 3438, 3629, 5652, 5966, 6876, 7258, 8949, 10887, 11932, 14516, 17898, 21774, 26847, 29987, 32661, 35796, 43548, 53694, 59974, 65322, 89961, 107388, 119948, 130644, 179922, 269883, 359844, 539766, 569753, 1079532, 1139506, 1709259, 2279012, 3418518, 5127777, 6837036, 10255554, 20511108]

約数ペア:

[(1, 20511108), (2, 10255554), (3, 6837036), (4, 5127777), (6, 3418518), (9, 2279012), (12, 1709259), (18, 1139506), (19, 1079532), (36, 569753), (38, 539766), (57, 359844), (76, 269883), (114, 179922), (157, 130644), (171, 119948), (191, 107388), (228, 89961), (314, 65322), (342, 59974), (382, 53694), (471, 43548), (573, 35796), (628, 32661), (684, 29987), (764, 26847), (942, 21774), (1146, 17898), (1413, 14516), (1719, 11932), (1884, 10887), (2292, 8949), (2826, 7258), (2983, 6876), (3438, 5966), (3629, 5652)]