19809250

素因数分解:

$2^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 40435200

約数和(自身を除く): 20625950

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 59, 79, 85, 118, 125, 158, 170, 250, 295, 395, 425, 590, 790, 850, 1003, 1343, 1475, 1975, 2006, 2125, 2686, 2950, 3950, 4250, 4661, 5015, 6715, 7375, 9322, 9875, 10030, 13430, 14750, 19750, 23305, 25075, 33575, 46610, 50150, 67150, 79237, 116525, 125375, 158474, 167875, 233050, 250750, 335750, 396185, 582625, 792370, 1165250, 1980925, 3961850, 9904625, 19809250]

約数ペア:

[(1, 19809250), (2, 9904625), (5, 3961850), (10, 1980925), (17, 1165250), (25, 792370), (34, 582625), (50, 396185), (59, 335750), (79, 250750), (85, 233050), (118, 167875), (125, 158474), (158, 125375), (170, 116525), (250, 79237), (295, 67150), (395, 50150), (425, 46610), (590, 33575), (790, 25075), (850, 23305), (1003, 19750), (1343, 14750), (1475, 13430), (1975, 10030), (2006, 9875), (2125, 9322), (2686, 7375), (2950, 6715), (3950, 5015), (4250, 4661)]