28401604

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 63814464

約数和(自身を除く): 35412860

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 83, 101, 121, 154, 166, 202, 242, 308, 332, 404, 484, 581, 707, 847, 913, 1111, 1162, 1414, 1694, 1826, 2222, 2324, 2828, 3388, 3652, 4444, 6391, 7777, 8383, 10043, 12221, 12782, 15554, 16766, 20086, 24442, 25564, 31108, 33532, 40172, 48884, 58681, 70301, 85547, 92213, 117362, 140602, 171094, 184426, 234724, 281204, 342188, 368852, 645491, 1014343, 1290982, 2028686, 2581964, 4057372, 7100401, 14200802, 28401604]

約数ペア:

[(1, 28401604), (2, 14200802), (4, 7100401), (7, 4057372), (11, 2581964), (14, 2028686), (22, 1290982), (28, 1014343), (44, 645491), (77, 368852), (83, 342188), (101, 281204), (121, 234724), (154, 184426), (166, 171094), (202, 140602), (242, 117362), (308, 92213), (332, 85547), (404, 70301), (484, 58681), (581, 48884), (707, 40172), (847, 33532), (913, 31108), (1111, 25564), (1162, 24442), (1414, 20086), (1694, 16766), (1826, 15554), (2222, 12782), (2324, 12221), (2828, 10043), (3388, 8383), (3652, 7777), (4444, 6391)]