20288480

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7459}}^1$

素因数の和:7491

約数の個数: 48

約数和(自身を含む): 50757840

約数和(自身を除く): 30469360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7459, 14918, 29836, 37295, 59672, 74590, 119344, 126803, 149180, 238688, 253606, 298360, 507212, 596720, 634015, 1014424, 1193440, 1268030, 2028848, 2536060, 4057696, 5072120, 10144240, 20288480]

約数ペア:

[(1, 20288480), (2, 10144240), (4, 5072120), (5, 4057696), (8, 2536060), (10, 2028848), (16, 1268030), (17, 1193440), (20, 1014424), (32, 634015), (34, 596720), (40, 507212), (68, 298360), (80, 253606), (85, 238688), (136, 149180), (160, 126803), (170, 119344), (272, 74590), (340, 59672), (544, 37295), (680, 29836), (1360, 14918), (2720, 7459)]