21072558

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{241}}^1$

素因数の和:337

約数の個数: 64

約数和(自身を含む): 48787200

約数和(自身を除く): 27714642

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 57, 59, 78, 114, 118, 177, 241, 247, 354, 482, 494, 723, 741, 767, 1121, 1446, 1482, 1534, 2242, 2301, 3133, 3363, 4579, 4602, 6266, 6726, 9158, 9399, 13737, 14219, 14573, 18798, 27474, 28438, 29146, 42657, 43719, 59527, 85314, 87438, 119054, 178581, 184847, 270161, 357162, 369694, 540322, 554541, 810483, 1109082, 1620966, 3512093, 7024186, 10536279, 21072558]

約数ペア:

[(1, 21072558), (2, 10536279), (3, 7024186), (6, 3512093), (13, 1620966), (19, 1109082), (26, 810483), (38, 554541), (39, 540322), (57, 369694), (59, 357162), (78, 270161), (114, 184847), (118, 178581), (177, 119054), (241, 87438), (247, 85314), (354, 59527), (482, 43719), (494, 42657), (723, 29146), (741, 28438), (767, 27474), (1121, 18798), (1446, 14573), (1482, 14219), (1534, 13737), (2242, 9399), (2301, 9158), (3133, 6726), (3363, 6266), (4579, 4602)]