202020140

素因数分解:

$2^2\times 5^1\times 7^5\times {\mathrm{601}}^1$

素因数の和:645

約数の個数: 72

約数和(自身を含む): 495768672

約数和(自身を除く): 293748532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 601, 686, 980, 1202, 1372, 1715, 2401, 2404, 3005, 3430, 4207, 4802, 6010, 6860, 8414, 9604, 12005, 12020, 16807, 16828, 21035, 24010, 29449, 33614, 42070, 48020, 58898, 67228, 84035, 84140, 117796, 147245, 168070, 206143, 294490, 336140, 412286, 588980, 824572, 1030715, 1443001, 2061430, 2886002, 4122860, 5772004, 7215005, 10101007, 14430010, 20202014, 28860020, 40404028, 50505035, 101010070, 202020140]

約数ペア:

[(1, 202020140), (2, 101010070), (4, 50505035), (5, 40404028), (7, 28860020), (10, 20202014), (14, 14430010), (20, 10101007), (28, 7215005), (35, 5772004), (49, 4122860), (70, 2886002), (98, 2061430), (140, 1443001), (196, 1030715), (245, 824572), (343, 588980), (490, 412286), (601, 336140), (686, 294490), (980, 206143), (1202, 168070), (1372, 147245), (1715, 117796), (2401, 84140), (2404, 84035), (3005, 67228), (3430, 58898), (4207, 48020), (4802, 42070), (6010, 33614), (6860, 29449), (8414, 24010), (9604, 21035), (12005, 16828), (12020, 16807)]