64403120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25969}}^1$

素因数の和:26013

約数の個数: 40

約数和(自身を含む): 154573440

約数和(自身を除く): 90170320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 25969, 51938, 103876, 129845, 207752, 259690, 415504, 519380, 805039, 1038760, 1610078, 2077520, 3220156, 4025195, 6440312, 8050390, 12880624, 16100780, 32201560, 64403120]

約数ペア:

[(1, 64403120), (2, 32201560), (4, 16100780), (5, 12880624), (8, 8050390), (10, 6440312), (16, 4025195), (20, 3220156), (31, 2077520), (40, 1610078), (62, 1038760), (80, 805039), (124, 519380), (155, 415504), (248, 259690), (310, 207752), (496, 129845), (620, 103876), (1240, 51938), (2480, 25969)]