81797000

素因数分解:

$2^3\times 5^3\times {\mathrm{157}}^1\times {\mathrm{521}}^1$

素因数の和:699

約数の個数: 64

約数和(自身を含む): 192993840

約数和(自身を除く): 111196840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 157, 200, 250, 314, 500, 521, 628, 785, 1000, 1042, 1256, 1570, 2084, 2605, 3140, 3925, 4168, 5210, 6280, 7850, 10420, 13025, 15700, 19625, 20840, 26050, 31400, 39250, 52100, 65125, 78500, 81797, 104200, 130250, 157000, 163594, 260500, 327188, 408985, 521000, 654376, 817970, 1635940, 2044925, 3271880, 4089850, 8179700, 10224625, 16359400, 20449250, 40898500, 81797000]

約数ペア:

[(1, 81797000), (2, 40898500), (4, 20449250), (5, 16359400), (8, 10224625), (10, 8179700), (20, 4089850), (25, 3271880), (40, 2044925), (50, 1635940), (100, 817970), (125, 654376), (157, 521000), (200, 408985), (250, 327188), (314, 260500), (500, 163594), (521, 157000), (628, 130250), (785, 104200), (1000, 81797), (1042, 78500), (1256, 65125), (1570, 52100), (2084, 39250), (2605, 31400), (3140, 26050), (3925, 20840), (4168, 19625), (5210, 15700), (6280, 13025), (7850, 10420)]