261293370

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{15581}}^1$

素因数の和:15647

約数の個数: 64

約数和(自身を含む): 691092864

約数和(自身を除く): 429799494

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 43, 65, 78, 86, 129, 130, 195, 215, 258, 390, 430, 559, 645, 1118, 1290, 1677, 2795, 3354, 5590, 8385, 15581, 16770, 31162, 46743, 77905, 93486, 155810, 202553, 233715, 405106, 467430, 607659, 669983, 1012765, 1215318, 1339966, 2009949, 2025530, 3038295, 3349915, 4019898, 6076590, 6699830, 8709779, 10049745, 17419558, 20099490, 26129337, 43548895, 52258674, 87097790, 130646685, 261293370]

約数ペア:

[(1, 261293370), (2, 130646685), (3, 87097790), (5, 52258674), (6, 43548895), (10, 26129337), (13, 20099490), (15, 17419558), (26, 10049745), (30, 8709779), (39, 6699830), (43, 6076590), (65, 4019898), (78, 3349915), (86, 3038295), (129, 2025530), (130, 2009949), (195, 1339966), (215, 1215318), (258, 1012765), (390, 669983), (430, 607659), (559, 467430), (645, 405106), (1118, 233715), (1290, 202553), (1677, 155810), (2795, 93486), (3354, 77905), (5590, 46743), (8385, 31162), (15581, 16770)]