865442020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^2\times {\mathrm{1031}}^1$

素因数の和:1153

約数の個数: 72

約数和(自身を含む): 1956548160

約数和(自身を除く): 1091106140

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 470, 893, 940, 1031, 1786, 2062, 2209, 3572, 4124, 4418, 4465, 5155, 8836, 8930, 10310, 11045, 17860, 19589, 20620, 22090, 39178, 41971, 44180, 48457, 78356, 83942, 96914, 97945, 167884, 193828, 195890, 209855, 242285, 391780, 419710, 484570, 839420, 920683, 969140, 1841366, 2277479, 3682732, 4554958, 4603415, 9109916, 9206830, 11387395, 18413660, 22774790, 43272101, 45549580, 86544202, 173088404, 216360505, 432721010, 865442020]

約数ペア:

[(1, 865442020), (2, 432721010), (4, 216360505), (5, 173088404), (10, 86544202), (19, 45549580), (20, 43272101), (38, 22774790), (47, 18413660), (76, 11387395), (94, 9206830), (95, 9109916), (188, 4603415), (190, 4554958), (235, 3682732), (380, 2277479), (470, 1841366), (893, 969140), (940, 920683), (1031, 839420), (1786, 484570), (2062, 419710), (2209, 391780), (3572, 242285), (4124, 209855), (4418, 195890), (4465, 193828), (5155, 167884), (8836, 97945), (8930, 96914), (10310, 83942), (11045, 78356), (17860, 48457), (19589, 44180), (20620, 41971), (22090, 39178)]