21788520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13967}}^1$

素因数の和:13994

約数の個数: 64

約数和(自身を含む): 70398720

約数和(自身を除く): 48610200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13967, 27934, 41901, 55868, 69835, 83802, 111736, 139670, 167604, 181571, 209505, 279340, 335208, 363142, 419010, 544713, 558680, 726284, 838020, 907855, 1089426, 1452568, 1676040, 1815710, 2178852, 2723565, 3631420, 4357704, 5447130, 7262840, 10894260, 21788520]

約数ペア:

[(1, 21788520), (2, 10894260), (3, 7262840), (4, 5447130), (5, 4357704), (6, 3631420), (8, 2723565), (10, 2178852), (12, 1815710), (13, 1676040), (15, 1452568), (20, 1089426), (24, 907855), (26, 838020), (30, 726284), (39, 558680), (40, 544713), (52, 419010), (60, 363142), (65, 335208), (78, 279340), (104, 209505), (120, 181571), (130, 167604), (156, 139670), (195, 111736), (260, 83802), (312, 69835), (390, 55868), (520, 41901), (780, 27934), (1560, 13967)]