21423213

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{241}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 38054016

約数和(自身を除く): 16630803

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 83, 119, 153, 241, 249, 357, 581, 723, 747, 1071, 1411, 1687, 1743, 2169, 4097, 4233, 5061, 5229, 9877, 12291, 12699, 15183, 20003, 28679, 29631, 36873, 60009, 86037, 88893, 140021, 180027, 258111, 340051, 420063, 1020153, 1260189, 2380357, 3060459, 7141071, 21423213]

約数ペア:

[(1, 21423213), (3, 7141071), (7, 3060459), (9, 2380357), (17, 1260189), (21, 1020153), (51, 420063), (63, 340051), (83, 258111), (119, 180027), (153, 140021), (241, 88893), (249, 86037), (357, 60009), (581, 36873), (723, 29631), (747, 28679), (1071, 20003), (1411, 15183), (1687, 12699), (1743, 12291), (2169, 9877), (4097, 5229), (4233, 5061)]