201558640

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{401}}^1$

素因数の和:578

約数の個数: 80

約数和(自身を含む): 482129856

約数和(自身を除く): 280571216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 103, 122, 206, 244, 305, 401, 412, 488, 515, 610, 802, 824, 976, 1030, 1220, 1604, 1648, 2005, 2060, 2440, 3208, 4010, 4120, 4880, 6283, 6416, 8020, 8240, 12566, 16040, 24461, 25132, 31415, 32080, 41303, 48922, 50264, 62830, 82606, 97844, 100528, 122305, 125660, 165212, 195688, 206515, 244610, 251320, 330424, 391376, 413030, 489220, 502640, 660848, 826060, 978440, 1652120, 1956880, 2519483, 3304240, 5038966, 10077932, 12597415, 20155864, 25194830, 40311728, 50389660, 100779320, 201558640]

約数ペア:

[(1, 201558640), (2, 100779320), (4, 50389660), (5, 40311728), (8, 25194830), (10, 20155864), (16, 12597415), (20, 10077932), (40, 5038966), (61, 3304240), (80, 2519483), (103, 1956880), (122, 1652120), (206, 978440), (244, 826060), (305, 660848), (401, 502640), (412, 489220), (488, 413030), (515, 391376), (610, 330424), (802, 251320), (824, 244610), (976, 206515), (1030, 195688), (1220, 165212), (1604, 125660), (1648, 122305), (2005, 100528), (2060, 97844), (2440, 82606), (3208, 62830), (4010, 50264), (4120, 48922), (4880, 41303), (6283, 32080), (6416, 31415), (8020, 25132), (8240, 24461), (12566, 16040)]