51347920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:632

約数の個数: 80

約数和(自身を含む): 130147920

約数和(自身を除く): 78800000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 97, 104, 130, 194, 208, 260, 388, 485, 509, 520, 776, 970, 1018, 1040, 1261, 1552, 1940, 2036, 2522, 2545, 3880, 4072, 5044, 5090, 6305, 6617, 7760, 8144, 10088, 10180, 12610, 13234, 20176, 20360, 25220, 26468, 33085, 40720, 49373, 50440, 52936, 66170, 98746, 100880, 105872, 132340, 197492, 246865, 264680, 394984, 493730, 529360, 641849, 789968, 987460, 1283698, 1974920, 2567396, 3209245, 3949840, 5134792, 6418490, 10269584, 12836980, 25673960, 51347920]

約数ペア:

[(1, 51347920), (2, 25673960), (4, 12836980), (5, 10269584), (8, 6418490), (10, 5134792), (13, 3949840), (16, 3209245), (20, 2567396), (26, 1974920), (40, 1283698), (52, 987460), (65, 789968), (80, 641849), (97, 529360), (104, 493730), (130, 394984), (194, 264680), (208, 246865), (260, 197492), (388, 132340), (485, 105872), (509, 100880), (520, 98746), (776, 66170), (970, 52936), (1018, 50440), (1040, 49373), (1261, 40720), (1552, 33085), (1940, 26468), (2036, 25220), (2522, 20360), (2545, 20176), (3880, 13234), (4072, 12610), (5044, 10180), (5090, 10088), (6305, 8144), (6617, 7760)]