181212020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{727}}^1$

素因数の和:861

約数の個数: 72

約数和(自身を含む): 422927232

約数和(自身を除く): 241715212

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 103, 110, 121, 206, 220, 242, 412, 484, 515, 605, 727, 1030, 1133, 1210, 1454, 2060, 2266, 2420, 2908, 3635, 4532, 5665, 7270, 7997, 11330, 12463, 14540, 15994, 22660, 24926, 31988, 39985, 49852, 62315, 74881, 79970, 87967, 124630, 149762, 159940, 175934, 249260, 299524, 351868, 374405, 439835, 748810, 823691, 879670, 1497620, 1647382, 1759340, 3294764, 4118455, 8236910, 9060601, 16473820, 18121202, 36242404, 45303005, 90606010, 181212020]

約数ペア:

[(1, 181212020), (2, 90606010), (4, 45303005), (5, 36242404), (10, 18121202), (11, 16473820), (20, 9060601), (22, 8236910), (44, 4118455), (55, 3294764), (103, 1759340), (110, 1647382), (121, 1497620), (206, 879670), (220, 823691), (242, 748810), (412, 439835), (484, 374405), (515, 351868), (605, 299524), (727, 249260), (1030, 175934), (1133, 159940), (1210, 149762), (1454, 124630), (2060, 87967), (2266, 79970), (2420, 74881), (2908, 62315), (3635, 49852), (4532, 39985), (5665, 31988), (7270, 24926), (7997, 22660), (11330, 15994), (12463, 14540)]