78655840

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8059}}^1$

素因数の和:8135

約数の個数: 48

約数和(自身を含む): 188894160

約数和(自身を除く): 110238320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2440, 4880, 8059, 9760, 16118, 32236, 40295, 64472, 80590, 128944, 161180, 257888, 322360, 491599, 644720, 983198, 1289440, 1966396, 2457995, 3932792, 4915990, 7865584, 9831980, 15731168, 19663960, 39327920, 78655840]

約数ペア:

[(1, 78655840), (2, 39327920), (4, 19663960), (5, 15731168), (8, 9831980), (10, 7865584), (16, 4915990), (20, 3932792), (32, 2457995), (40, 1966396), (61, 1289440), (80, 983198), (122, 644720), (160, 491599), (244, 322360), (305, 257888), (488, 161180), (610, 128944), (976, 80590), (1220, 64472), (1952, 40295), (2440, 32236), (4880, 16118), (8059, 9760)]