20953460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:185

約数の個数: 96

約数和(自身を含む): 51819264

約数和(自身を除く): 30865804

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 41, 44, 46, 55, 82, 92, 101, 110, 115, 164, 202, 205, 220, 230, 253, 404, 410, 451, 460, 505, 506, 820, 902, 943, 1010, 1012, 1111, 1265, 1804, 1886, 2020, 2222, 2255, 2323, 2530, 3772, 4141, 4444, 4510, 4646, 4715, 5060, 5555, 8282, 9020, 9292, 9430, 10373, 11110, 11615, 16564, 18860, 20705, 20746, 22220, 23230, 25553, 41410, 41492, 45551, 46460, 51106, 51865, 82820, 91102, 95243, 102212, 103730, 127765, 182204, 190486, 207460, 227755, 255530, 380972, 455510, 476215, 511060, 911020, 952430, 1047673, 1904860, 2095346, 4190692, 5238365, 10476730, 20953460]

約数ペア:

[(1, 20953460), (2, 10476730), (4, 5238365), (5, 4190692), (10, 2095346), (11, 1904860), (20, 1047673), (22, 952430), (23, 911020), (41, 511060), (44, 476215), (46, 455510), (55, 380972), (82, 255530), (92, 227755), (101, 207460), (110, 190486), (115, 182204), (164, 127765), (202, 103730), (205, 102212), (220, 95243), (230, 91102), (253, 82820), (404, 51865), (410, 51106), (451, 46460), (460, 45551), (505, 41492), (506, 41410), (820, 25553), (902, 23230), (943, 22220), (1010, 20746), (1012, 20705), (1111, 18860), (1265, 16564), (1804, 11615), (1886, 11110), (2020, 10373), (2222, 9430), (2255, 9292), (2323, 9020), (2530, 8282), (3772, 5555), (4141, 5060), (4444, 4715), (4510, 4646)]