21141810

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{607}}^1$

素因数の和:669

約数の個数: 80

約数和(自身を含む): 58265856

約数和(自身を除く): 37124046

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 43, 45, 54, 81, 86, 90, 129, 135, 162, 215, 258, 270, 387, 405, 430, 607, 645, 774, 810, 1161, 1214, 1290, 1821, 1935, 2322, 3035, 3483, 3642, 3870, 5463, 5805, 6070, 6966, 9105, 10926, 11610, 16389, 17415, 18210, 26101, 27315, 32778, 34830, 49167, 52202, 54630, 78303, 81945, 98334, 130505, 156606, 163890, 234909, 245835, 261010, 391515, 469818, 491670, 704727, 783030, 1174545, 1409454, 2114181, 2349090, 3523635, 4228362, 7047270, 10570905, 21141810]

約数ペア:

[(1, 21141810), (2, 10570905), (3, 7047270), (5, 4228362), (6, 3523635), (9, 2349090), (10, 2114181), (15, 1409454), (18, 1174545), (27, 783030), (30, 704727), (43, 491670), (45, 469818), (54, 391515), (81, 261010), (86, 245835), (90, 234909), (129, 163890), (135, 156606), (162, 130505), (215, 98334), (258, 81945), (270, 78303), (387, 54630), (405, 52202), (430, 49167), (607, 34830), (645, 32778), (774, 27315), (810, 26101), (1161, 18210), (1214, 17415), (1290, 16389), (1821, 11610), (1935, 10926), (2322, 9105), (3035, 6966), (3483, 6070), (3642, 5805), (3870, 5463)]