20181015424

素因数分解:

$2^7\times {\mathrm{397}}^1\times {\mathrm{409}}^1\times {\mathrm{971}}^1$

素因数の和:1791

約数の個数: 64

約数和(自身を含む): 40445794800

約数和(自身を除く): 20264779376

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 397, 409, 794, 818, 971, 1588, 1636, 1942, 3176, 3272, 3884, 6352, 6544, 7768, 12704, 13088, 15536, 25408, 26176, 31072, 50816, 52352, 62144, 124288, 162373, 324746, 385487, 397139, 649492, 770974, 794278, 1298984, 1541948, 1588556, 2597968, 3083896, 3177112, 5195936, 6167792, 6354224, 10391872, 12335584, 12708448, 20783744, 24671168, 25416896, 49342336, 50833792, 157664183, 315328366, 630656732, 1261313464, 2522626928, 5045253856, 10090507712, 20181015424]

約数ペア:

[(1, 20181015424), (2, 10090507712), (4, 5045253856), (8, 2522626928), (16, 1261313464), (32, 630656732), (64, 315328366), (128, 157664183), (397, 50833792), (409, 49342336), (794, 25416896), (818, 24671168), (971, 20783744), (1588, 12708448), (1636, 12335584), (1942, 10391872), (3176, 6354224), (3272, 6167792), (3884, 5195936), (6352, 3177112), (6544, 3083896), (7768, 2597968), (12704, 1588556), (13088, 1541948), (15536, 1298984), (25408, 794278), (26176, 770974), (31072, 649492), (50816, 397139), (52352, 385487), (62144, 324746), (124288, 162373)]