2021619875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{503}}^1$

素因数の和:645

約数の個数: 64

約数和(自身を含む): 2868203520

約数和(自身を除く): 846583645

約数列:

[1, 5, 11, 25, 37, 55, 79, 125, 185, 275, 395, 407, 503, 869, 925, 1375, 1975, 2035, 2515, 2923, 4345, 4625, 5533, 9875, 10175, 12575, 14615, 18611, 21725, 27665, 32153, 39737, 50875, 62875, 73075, 93055, 108625, 138325, 160765, 198685, 204721, 365375, 437107, 465275, 691625, 803825, 993425, 1023605, 1470269, 2185535, 2326375, 4019125, 4967125, 5118025, 7351345, 10927675, 16172959, 25590125, 36756725, 54638375, 80864795, 183783625, 404323975, 2021619875]

約数ペア:

[(1, 2021619875), (5, 404323975), (11, 183783625), (25, 80864795), (37, 54638375), (55, 36756725), (79, 25590125), (125, 16172959), (185, 10927675), (275, 7351345), (395, 5118025), (407, 4967125), (503, 4019125), (869, 2326375), (925, 2185535), (1375, 1470269), (1975, 1023605), (2035, 993425), (2515, 803825), (2923, 691625), (4345, 465275), (4625, 437107), (5533, 365375), (9875, 204721), (10175, 198685), (12575, 160765), (14615, 138325), (18611, 108625), (21725, 93055), (27665, 73075), (32153, 62875), (39737, 50875)]