20870560

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7673}}^1$

素因数の和:7705

約数の個数: 48

約数和(自身を含む): 52213896

約数和(自身を除く): 31343336

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, 7673, 15346, 30692, 38365, 61384, 76730, 122768, 130441, 153460, 245536, 260882, 306920, 521764, 613840, 652205, 1043528, 1227680, 1304410, 2087056, 2608820, 4174112, 5217640, 10435280, 20870560]

約数ペア:

[(1, 20870560), (2, 10435280), (4, 5217640), (5, 4174112), (8, 2608820), (10, 2087056), (16, 1304410), (17, 1227680), (20, 1043528), (32, 652205), (34, 613840), (40, 521764), (68, 306920), (80, 260882), (85, 245536), (136, 153460), (160, 130441), (170, 122768), (272, 76730), (340, 61384), (544, 38365), (680, 30692), (1360, 15346), (2720, 7673)]