20787390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:298

約数の個数: 96

約数和(自身を含む): 59099040

約数和(自身を除く): 38311650

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 109, 117, 130, 163, 195, 218, 234, 326, 327, 390, 489, 545, 585, 654, 815, 978, 981, 1090, 1170, 1417, 1467, 1630, 1635, 1962, 2119, 2445, 2834, 2934, 3270, 4238, 4251, 4890, 4905, 6357, 7085, 7335, 8502, 9810, 10595, 12714, 12753, 14170, 14670, 17767, 19071, 21190, 21255, 25506, 31785, 35534, 38142, 42510, 53301, 63570, 63765, 88835, 95355, 106602, 127530, 159903, 177670, 190710, 230971, 266505, 319806, 461942, 533010, 692913, 799515, 1154855, 1385826, 1599030, 2078739, 2309710, 3464565, 4157478, 6929130, 10393695, 20787390]

約数ペア:

[(1, 20787390), (2, 10393695), (3, 6929130), (5, 4157478), (6, 3464565), (9, 2309710), (10, 2078739), (13, 1599030), (15, 1385826), (18, 1154855), (26, 799515), (30, 692913), (39, 533010), (45, 461942), (65, 319806), (78, 266505), (90, 230971), (109, 190710), (117, 177670), (130, 159903), (163, 127530), (195, 106602), (218, 95355), (234, 88835), (326, 63765), (327, 63570), (390, 53301), (489, 42510), (545, 38142), (585, 35534), (654, 31785), (815, 25506), (978, 21255), (981, 21190), (1090, 19071), (1170, 17767), (1417, 14670), (1467, 14170), (1630, 12753), (1635, 12714), (1962, 10595), (2119, 9810), (2445, 8502), (2834, 7335), (2934, 7085), (3270, 6357), (4238, 4905), (4251, 4890)]