19657250

素因数分解:

$2^1\times 5^3\times {\mathrm{61}}^1\times {\mathrm{1289}}^1$

素因数の和:1367

約数の個数: 32

約数和(自身を含む): 37430640

約数和(自身を除く): 17773390

約数列:

[1, 2, 5, 10, 25, 50, 61, 122, 125, 250, 305, 610, 1289, 1525, 2578, 3050, 6445, 7625, 12890, 15250, 32225, 64450, 78629, 157258, 161125, 322250, 393145, 786290, 1965725, 3931450, 9828625, 19657250]

約数ペア:

[(1, 19657250), (2, 9828625), (5, 3931450), (10, 1965725), (25, 786290), (50, 393145), (61, 322250), (122, 161125), (125, 157258), (250, 78629), (305, 64450), (610, 32225), (1289, 15250), (1525, 12890), (2578, 7625), (3050, 6445)]