203439220

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{331}}^1\times {\mathrm{389}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 435052800

約数和(自身を除く): 231613580

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 331, 389, 395, 662, 778, 790, 1324, 1556, 1580, 1655, 1945, 3310, 3890, 6620, 7780, 26149, 30731, 52298, 61462, 104596, 122924, 128759, 130745, 153655, 257518, 261490, 307310, 515036, 522980, 614620, 643795, 1287590, 2575180, 10171961, 20343922, 40687844, 50859805, 101719610, 203439220]

約数ペア:

[(1, 203439220), (2, 101719610), (4, 50859805), (5, 40687844), (10, 20343922), (20, 10171961), (79, 2575180), (158, 1287590), (316, 643795), (331, 614620), (389, 522980), (395, 515036), (662, 307310), (778, 261490), (790, 257518), (1324, 153655), (1556, 130745), (1580, 128759), (1655, 122924), (1945, 104596), (3310, 61462), (3890, 52298), (6620, 30731), (7780, 26149)]