21977680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{761}}^1$

素因数の和:812

約数の個数: 60

約数和(自身を含む): 53999892

約数和(自身を除く): 32022212

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 722, 760, 761, 1444, 1520, 1522, 1805, 2888, 3044, 3610, 3805, 5776, 6088, 7220, 7610, 12176, 14440, 14459, 15220, 28880, 28918, 30440, 57836, 60880, 72295, 115672, 144590, 231344, 274721, 289180, 549442, 578360, 1098884, 1156720, 1373605, 2197768, 2747210, 4395536, 5494420, 10988840, 21977680]

約数ペア:

[(1, 21977680), (2, 10988840), (4, 5494420), (5, 4395536), (8, 2747210), (10, 2197768), (16, 1373605), (19, 1156720), (20, 1098884), (38, 578360), (40, 549442), (76, 289180), (80, 274721), (95, 231344), (152, 144590), (190, 115672), (304, 72295), (361, 60880), (380, 57836), (722, 30440), (760, 28918), (761, 28880), (1444, 15220), (1520, 14459), (1522, 14440), (1805, 12176), (2888, 7610), (3044, 7220), (3610, 6088), (3805, 5776)]