80798620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1997}}^1$

素因数の和:2047

約数の個数: 72

約数和(自身を含む): 206097696

約数和(自身を除く): 125299076

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 289, 340, 476, 578, 595, 1156, 1190, 1445, 1997, 2023, 2380, 2890, 3994, 4046, 5780, 7988, 8092, 9985, 10115, 13979, 19970, 20230, 27958, 33949, 39940, 40460, 55916, 67898, 69895, 135796, 139790, 169745, 237643, 279580, 339490, 475286, 577133, 678980, 950572, 1154266, 1188215, 2308532, 2376430, 2885665, 4039931, 4752860, 5771330, 8079862, 11542660, 16159724, 20199655, 40399310, 80798620]

約数ペア:

[(1, 80798620), (2, 40399310), (4, 20199655), (5, 16159724), (7, 11542660), (10, 8079862), (14, 5771330), (17, 4752860), (20, 4039931), (28, 2885665), (34, 2376430), (35, 2308532), (68, 1188215), (70, 1154266), (85, 950572), (119, 678980), (140, 577133), (170, 475286), (238, 339490), (289, 279580), (340, 237643), (476, 169745), (578, 139790), (595, 135796), (1156, 69895), (1190, 67898), (1445, 55916), (1997, 40460), (2023, 39940), (2380, 33949), (2890, 27958), (3994, 20230), (4046, 19970), (5780, 13979), (7988, 10115), (8092, 9985)]