21737560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2459}}^1$

素因数の和:2500

約数の個数: 64

約数和(自身を含む): 55792800

約数和(自身を除く): 34055240

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 2459, 4420, 4918, 8840, 9836, 12295, 19672, 24590, 31967, 41803, 49180, 63934, 83606, 98360, 127868, 159835, 167212, 209015, 255736, 319670, 334424, 418030, 543439, 639340, 836060, 1086878, 1278680, 1672120, 2173756, 2717195, 4347512, 5434390, 10868780, 21737560]

約数ペア:

[(1, 21737560), (2, 10868780), (4, 5434390), (5, 4347512), (8, 2717195), (10, 2173756), (13, 1672120), (17, 1278680), (20, 1086878), (26, 836060), (34, 639340), (40, 543439), (52, 418030), (65, 334424), (68, 319670), (85, 255736), (104, 209015), (130, 167212), (136, 159835), (170, 127868), (221, 98360), (260, 83606), (340, 63934), (442, 49180), (520, 41803), (680, 31967), (884, 24590), (1105, 19672), (1768, 12295), (2210, 9836), (2459, 8840), (4420, 4918)]