21719412

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4219}}^1$

素因数の和:4253

約数の個数: 72

約数和(自身を含む): 64515360

約数和(自身を除く): 42795948

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 13, 18, 22, 26, 33, 36, 39, 44, 52, 66, 78, 99, 117, 132, 143, 156, 198, 234, 286, 396, 429, 468, 572, 858, 1287, 1716, 2574, 4219, 5148, 8438, 12657, 16876, 25314, 37971, 46409, 50628, 54847, 75942, 92818, 109694, 139227, 151884, 164541, 185636, 219388, 278454, 329082, 417681, 493623, 556908, 603317, 658164, 835362, 987246, 1206634, 1670724, 1809951, 1974492, 2413268, 3619902, 5429853, 7239804, 10859706, 21719412]

約数ペア:

[(1, 21719412), (2, 10859706), (3, 7239804), (4, 5429853), (6, 3619902), (9, 2413268), (11, 1974492), (12, 1809951), (13, 1670724), (18, 1206634), (22, 987246), (26, 835362), (33, 658164), (36, 603317), (39, 556908), (44, 493623), (52, 417681), (66, 329082), (78, 278454), (99, 219388), (117, 185636), (132, 164541), (143, 151884), (156, 139227), (198, 109694), (234, 92818), (286, 75942), (396, 54847), (429, 50628), (468, 46409), (572, 37971), (858, 25314), (1287, 16876), (1716, 12657), (2574, 8438), (4219, 5148)]