668577890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1709}}^1$

素因数の和:1835

約数の個数: 64

約数和(自身を含む): 1329696000

約数和(自身を除く): 661118110

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 71, 95, 142, 145, 190, 290, 355, 551, 710, 1102, 1349, 1709, 2059, 2698, 2755, 3418, 4118, 5510, 6745, 8545, 10295, 13490, 17090, 20590, 32471, 39121, 49561, 64942, 78242, 99122, 121339, 162355, 195605, 242678, 247805, 324710, 391210, 495610, 606695, 941659, 1213390, 1883318, 2305441, 3518831, 4610882, 4708295, 7037662, 9416590, 11527205, 17594155, 23054410, 35188310, 66857789, 133715578, 334288945, 668577890]

約数ペア:

[(1, 668577890), (2, 334288945), (5, 133715578), (10, 66857789), (19, 35188310), (29, 23054410), (38, 17594155), (58, 11527205), (71, 9416590), (95, 7037662), (142, 4708295), (145, 4610882), (190, 3518831), (290, 2305441), (355, 1883318), (551, 1213390), (710, 941659), (1102, 606695), (1349, 495610), (1709, 391210), (2059, 324710), (2698, 247805), (2755, 242678), (3418, 195605), (4118, 162355), (5510, 121339), (6745, 99122), (8545, 78242), (10295, 64942), (13490, 49561), (17090, 39121), (20590, 32471)]