21853254920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{987941}}^1$

素因数の和:988038

約数の個数: 64

約数和(自身を含む): 56905459200

約数和(自身を除く): 35052204280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 1106, 1580, 2212, 2765, 3160, 4424, 5530, 11060, 22120, 987941, 1975882, 3951764, 4939705, 6915587, 7903528, 9879410, 13831174, 19758820, 27662348, 34577935, 39517640, 55324696, 69155870, 78047339, 138311740, 156094678, 276623480, 312189356, 390236695, 546331373, 624378712, 780473390, 1092662746, 1560946780, 2185325492, 2731656865, 3121893560, 4370650984, 5463313730, 10926627460, 21853254920]

約数ペア:

[(1, 21853254920), (2, 10926627460), (4, 5463313730), (5, 4370650984), (7, 3121893560), (8, 2731656865), (10, 2185325492), (14, 1560946780), (20, 1092662746), (28, 780473390), (35, 624378712), (40, 546331373), (56, 390236695), (70, 312189356), (79, 276623480), (140, 156094678), (158, 138311740), (280, 78047339), (316, 69155870), (395, 55324696), (553, 39517640), (632, 34577935), (790, 27662348), (1106, 19758820), (1580, 13831174), (2212, 9879410), (2765, 7903528), (3160, 6915587), (4424, 4939705), (5530, 3951764), (11060, 1975882), (22120, 987941)]