64535560

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{26449}}^1$

素因数の和:26521

約数の個数: 32

約数和(自身を含む): 147591000

約数和(自身を除く): 83055440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 26449, 52898, 105796, 132245, 211592, 264490, 528980, 1057960, 1613389, 3226778, 6453556, 8066945, 12907112, 16133890, 32267780, 64535560]

約数ペア:

[(1, 64535560), (2, 32267780), (4, 16133890), (5, 12907112), (8, 8066945), (10, 6453556), (20, 3226778), (40, 1613389), (61, 1057960), (122, 528980), (244, 264490), (305, 211592), (488, 132245), (610, 105796), (1220, 52898), (2440, 26449)]