20975178

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1013}}^1$

素因数の和:1071

約数の個数: 64

約数和(自身を含む): 52565760

約数和(自身を除く): 31590582

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 29, 34, 42, 51, 58, 87, 102, 119, 174, 203, 238, 357, 406, 493, 609, 714, 986, 1013, 1218, 1479, 2026, 2958, 3039, 3451, 6078, 6902, 7091, 10353, 14182, 17221, 20706, 21273, 29377, 34442, 42546, 51663, 58754, 88131, 103326, 120547, 176262, 205639, 241094, 361641, 411278, 499409, 616917, 723282, 998818, 1233834, 1498227, 2996454, 3495863, 6991726, 10487589, 20975178]

約数ペア:

[(1, 20975178), (2, 10487589), (3, 6991726), (6, 3495863), (7, 2996454), (14, 1498227), (17, 1233834), (21, 998818), (29, 723282), (34, 616917), (42, 499409), (51, 411278), (58, 361641), (87, 241094), (102, 205639), (119, 176262), (174, 120547), (203, 103326), (238, 88131), (357, 58754), (406, 51663), (493, 42546), (609, 34442), (714, 29377), (986, 21273), (1013, 20706), (1218, 17221), (1479, 14182), (2026, 10353), (2958, 7091), (3039, 6902), (3451, 6078)]