20841288

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{997}}^1$

素因数の和:1086

約数の個数: 64

約数和(自身を含む): 57005760

約数和(自身を除く): 36164472

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 67, 78, 104, 134, 156, 201, 268, 312, 402, 536, 804, 871, 997, 1608, 1742, 1994, 2613, 2991, 3484, 3988, 5226, 5982, 6968, 7976, 10452, 11964, 12961, 20904, 23928, 25922, 38883, 51844, 66799, 77766, 103688, 133598, 155532, 200397, 267196, 311064, 400794, 534392, 801588, 868387, 1603176, 1736774, 2605161, 3473548, 5210322, 6947096, 10420644, 20841288]

約数ペア:

[(1, 20841288), (2, 10420644), (3, 6947096), (4, 5210322), (6, 3473548), (8, 2605161), (12, 1736774), (13, 1603176), (24, 868387), (26, 801588), (39, 534392), (52, 400794), (67, 311064), (78, 267196), (104, 200397), (134, 155532), (156, 133598), (201, 103688), (268, 77766), (312, 66799), (402, 51844), (536, 38883), (804, 25922), (871, 23928), (997, 20904), (1608, 12961), (1742, 11964), (1994, 10452), (2613, 7976), (2991, 6968), (3484, 5982), (3988, 5226)]