20413828

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 36

約数和(自身を含む): 38447472

約数和(自身を除く): 18033644

約数列:

[1, 2, 4, 19, 38, 67, 76, 134, 211, 268, 361, 422, 722, 844, 1273, 1444, 2546, 4009, 5092, 8018, 14137, 16036, 24187, 28274, 48374, 56548, 76171, 96748, 152342, 268603, 304684, 537206, 1074412, 5103457, 10206914, 20413828]

約数ペア:

[(1, 20413828), (2, 10206914), (4, 5103457), (19, 1074412), (38, 537206), (67, 304684), (76, 268603), (134, 152342), (211, 96748), (268, 76171), (361, 56548), (422, 48374), (722, 28274), (844, 24187), (1273, 16036), (1444, 14137), (2546, 8018), (4009, 5092)]