30720275

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^2\times {\mathrm{43}}^1$

素因数の和:152

約数の個数: 36

約数和(自身を含む): 42303096

約数和(自身を除く): 11582821

約数列:

[1, 5, 17, 25, 41, 43, 85, 205, 215, 425, 697, 731, 1025, 1075, 1681, 1763, 3485, 3655, 8405, 8815, 17425, 18275, 28577, 29971, 42025, 44075, 72283, 142885, 149855, 361415, 714425, 749275, 1228811, 1807075, 6144055, 30720275]

約数ペア:

[(1, 30720275), (5, 6144055), (17, 1807075), (25, 1228811), (41, 749275), (43, 714425), (85, 361415), (205, 149855), (215, 142885), (425, 72283), (697, 44075), (731, 42025), (1025, 29971), (1075, 28577), (1681, 18275), (1763, 17425), (3485, 8815), (3655, 8405)]