21954140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4967}}^1$

素因数の和:5006

約数の個数: 48

約数和(自身を含む): 52581312

約数和(自身を除く): 30627172

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4967, 9934, 19868, 24835, 49670, 64571, 84439, 99340, 129142, 168878, 258284, 322855, 337756, 422195, 645710, 844390, 1097707, 1291420, 1688780, 2195414, 4390828, 5488535, 10977070, 21954140]

約数ペア:

[(1, 21954140), (2, 10977070), (4, 5488535), (5, 4390828), (10, 2195414), (13, 1688780), (17, 1291420), (20, 1097707), (26, 844390), (34, 645710), (52, 422195), (65, 337756), (68, 322855), (85, 258284), (130, 168878), (170, 129142), (221, 99340), (260, 84439), (340, 64571), (442, 49670), (884, 24835), (1105, 19868), (2210, 9934), (4420, 4967)]