278995288

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7867}}^1$

素因数の和:7928

約数の個数: 64

約数和(自身を含む): 634475520

約数和(自身を除く): 355480232

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 31, 44, 52, 62, 88, 104, 124, 143, 248, 286, 341, 403, 572, 682, 806, 1144, 1364, 1612, 2728, 3224, 4433, 7867, 8866, 15734, 17732, 31468, 35464, 62936, 86537, 102271, 173074, 204542, 243877, 346148, 409084, 487754, 692296, 818168, 975508, 1124981, 1951016, 2249962, 2682647, 3170401, 4499924, 5365294, 6340802, 8999848, 10730588, 12681604, 21461176, 25363208, 34874411, 69748822, 139497644, 278995288]

約数ペア:

[(1, 278995288), (2, 139497644), (4, 69748822), (8, 34874411), (11, 25363208), (13, 21461176), (22, 12681604), (26, 10730588), (31, 8999848), (44, 6340802), (52, 5365294), (62, 4499924), (88, 3170401), (104, 2682647), (124, 2249962), (143, 1951016), (248, 1124981), (286, 975508), (341, 818168), (403, 692296), (572, 487754), (682, 409084), (806, 346148), (1144, 243877), (1364, 204542), (1612, 173074), (2728, 102271), (3224, 86537), (4433, 62936), (7867, 35464), (8866, 31468), (15734, 17732)]