13172620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 30636144

約数和(自身を除く): 17463524

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 53, 68, 85, 86, 106, 170, 172, 212, 215, 265, 289, 340, 430, 530, 578, 731, 860, 901, 1060, 1156, 1445, 1462, 1802, 2279, 2890, 2924, 3604, 3655, 4505, 4558, 5780, 7310, 9010, 9116, 11395, 12427, 14620, 15317, 18020, 22790, 24854, 30634, 38743, 45580, 49708, 61268, 62135, 76585, 77486, 124270, 153170, 154972, 193715, 248540, 306340, 387430, 658631, 774860, 1317262, 2634524, 3293155, 6586310, 13172620]

約数ペア:

[(1, 13172620), (2, 6586310), (4, 3293155), (5, 2634524), (10, 1317262), (17, 774860), (20, 658631), (34, 387430), (43, 306340), (53, 248540), (68, 193715), (85, 154972), (86, 153170), (106, 124270), (170, 77486), (172, 76585), (212, 62135), (215, 61268), (265, 49708), (289, 45580), (340, 38743), (430, 30634), (530, 24854), (578, 22790), (731, 18020), (860, 15317), (901, 14620), (1060, 12427), (1156, 11395), (1445, 9116), (1462, 9010), (1802, 7310), (2279, 5780), (2890, 4558), (2924, 4505), (3604, 3655)]