90404020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{3181}}^1$

素因数の和:3233

約数の個数: 72

約数和(自身を含む): 228531240

約数和(自身を除く): 138127220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 116, 140, 145, 196, 203, 245, 290, 406, 490, 580, 812, 980, 1015, 1421, 2030, 2842, 3181, 4060, 5684, 6362, 7105, 12724, 14210, 15905, 22267, 28420, 31810, 44534, 63620, 89068, 92249, 111335, 155869, 184498, 222670, 311738, 368996, 445340, 461245, 623476, 645743, 779345, 922490, 1291486, 1558690, 1844980, 2582972, 3117380, 3228715, 4520201, 6457430, 9040402, 12914860, 18080804, 22601005, 45202010, 90404020]

約数ペア:

[(1, 90404020), (2, 45202010), (4, 22601005), (5, 18080804), (7, 12914860), (10, 9040402), (14, 6457430), (20, 4520201), (28, 3228715), (29, 3117380), (35, 2582972), (49, 1844980), (58, 1558690), (70, 1291486), (98, 922490), (116, 779345), (140, 645743), (145, 623476), (196, 461245), (203, 445340), (245, 368996), (290, 311738), (406, 222670), (490, 184498), (580, 155869), (812, 111335), (980, 92249), (1015, 89068), (1421, 63620), (2030, 44534), (2842, 31810), (3181, 28420), (4060, 22267), (5684, 15905), (6362, 14210), (7105, 12724)]