21905268

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:333

約数の個数: 96

約数和(自身を含む): 64555008

約数和(自身を除く): 42649740

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 66, 77, 84, 132, 151, 154, 157, 231, 302, 308, 314, 453, 462, 471, 604, 628, 906, 924, 942, 1057, 1099, 1661, 1727, 1812, 1884, 2114, 2198, 3171, 3297, 3322, 3454, 4228, 4396, 4983, 5181, 6342, 6594, 6644, 6908, 9966, 10362, 11627, 12089, 12684, 13188, 19932, 20724, 23254, 23707, 24178, 34881, 36267, 46508, 47414, 48356, 69762, 71121, 72534, 94828, 139524, 142242, 145068, 165949, 260777, 284484, 331898, 497847, 521554, 663796, 782331, 995694, 1043108, 1564662, 1825439, 1991388, 3129324, 3650878, 5476317, 7301756, 10952634, 21905268]

約数ペア:

[(1, 21905268), (2, 10952634), (3, 7301756), (4, 5476317), (6, 3650878), (7, 3129324), (11, 1991388), (12, 1825439), (14, 1564662), (21, 1043108), (22, 995694), (28, 782331), (33, 663796), (42, 521554), (44, 497847), (66, 331898), (77, 284484), (84, 260777), (132, 165949), (151, 145068), (154, 142242), (157, 139524), (231, 94828), (302, 72534), (308, 71121), (314, 69762), (453, 48356), (462, 47414), (471, 46508), (604, 36267), (628, 34881), (906, 24178), (924, 23707), (942, 23254), (1057, 20724), (1099, 19932), (1661, 13188), (1727, 12684), (1812, 12089), (1884, 11627), (2114, 10362), (2198, 9966), (3171, 6908), (3297, 6644), (3322, 6594), (3454, 6342), (4228, 5181), (4396, 4983)]