28571980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{347}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 63141120

約数和(自身を除く): 34569140

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 179, 230, 347, 358, 460, 694, 716, 895, 1388, 1735, 1790, 3470, 3580, 4117, 6940, 7981, 8234, 15962, 16468, 20585, 31924, 39905, 41170, 62113, 79810, 82340, 124226, 159620, 248452, 310565, 621130, 1242260, 1428599, 2857198, 5714396, 7142995, 14285990, 28571980]

約数ペア:

[(1, 28571980), (2, 14285990), (4, 7142995), (5, 5714396), (10, 2857198), (20, 1428599), (23, 1242260), (46, 621130), (92, 310565), (115, 248452), (179, 159620), (230, 124226), (347, 82340), (358, 79810), (460, 62113), (694, 41170), (716, 39905), (895, 31924), (1388, 20585), (1735, 16468), (1790, 15962), (3470, 8234), (3580, 7981), (4117, 6940)]