21610225

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:119

約数の個数: 72

約数和(自身を含む): 35622720

約数和(自身を除く): 14012495

約数列:

[1, 5, 7, 13, 23, 25, 35, 49, 59, 65, 91, 115, 161, 175, 245, 295, 299, 325, 413, 455, 575, 637, 767, 805, 1127, 1225, 1357, 1475, 1495, 2065, 2093, 2275, 2891, 3185, 3835, 4025, 5369, 5635, 6785, 7475, 9499, 10325, 10465, 14455, 14651, 15925, 17641, 19175, 26845, 28175, 33925, 37583, 47495, 52325, 66493, 72275, 73255, 88205, 123487, 134225, 187915, 237475, 332465, 366275, 441025, 617435, 864409, 939575, 1662325, 3087175, 4322045, 21610225]

約数ペア:

[(1, 21610225), (5, 4322045), (7, 3087175), (13, 1662325), (23, 939575), (25, 864409), (35, 617435), (49, 441025), (59, 366275), (65, 332465), (91, 237475), (115, 187915), (161, 134225), (175, 123487), (245, 88205), (295, 73255), (299, 72275), (325, 66493), (413, 52325), (455, 47495), (575, 37583), (637, 33925), (767, 28175), (805, 26845), (1127, 19175), (1225, 17641), (1357, 15925), (1475, 14651), (1495, 14455), (2065, 10465), (2093, 10325), (2275, 9499), (2891, 7475), (3185, 6785), (3835, 5635), (4025, 5369)]