20527960

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{421}}^1$

素因数の和:508

約数の個数: 64

約数和(自身を含む): 49222080

約数和(自身を除く): 28694120

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 53, 92, 106, 115, 184, 212, 230, 265, 421, 424, 460, 530, 842, 920, 1060, 1219, 1684, 2105, 2120, 2438, 3368, 4210, 4876, 6095, 8420, 9683, 9752, 12190, 16840, 19366, 22313, 24380, 38732, 44626, 48415, 48760, 77464, 89252, 96830, 111565, 178504, 193660, 223130, 387320, 446260, 513199, 892520, 1026398, 2052796, 2565995, 4105592, 5131990, 10263980, 20527960]

約数ペア:

[(1, 20527960), (2, 10263980), (4, 5131990), (5, 4105592), (8, 2565995), (10, 2052796), (20, 1026398), (23, 892520), (40, 513199), (46, 446260), (53, 387320), (92, 223130), (106, 193660), (115, 178504), (184, 111565), (212, 96830), (230, 89252), (265, 77464), (421, 48760), (424, 48415), (460, 44626), (530, 38732), (842, 24380), (920, 22313), (1060, 19366), (1219, 16840), (1684, 12190), (2105, 9752), (2120, 9683), (2438, 8420), (3368, 6095), (4210, 4876)]