21072660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{383}}^1$

素因数の和:533

約数の個数: 96

約数和(自身を含む): 68124672

約数和(自身を除く): 47052012

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 131, 140, 210, 262, 383, 393, 420, 524, 655, 766, 786, 917, 1149, 1310, 1532, 1572, 1834, 1915, 1965, 2298, 2620, 2681, 2751, 3668, 3830, 3930, 4585, 4596, 5362, 5502, 5745, 7660, 7860, 8043, 9170, 10724, 11004, 11490, 13405, 13755, 16086, 18340, 22980, 26810, 27510, 32172, 40215, 50173, 53620, 55020, 80430, 100346, 150519, 160860, 200692, 250865, 301038, 351211, 501730, 602076, 702422, 752595, 1003460, 1053633, 1404844, 1505190, 1756055, 2107266, 3010380, 3512110, 4214532, 5268165, 7024220, 10536330, 21072660]

約数ペア:

[(1, 21072660), (2, 10536330), (3, 7024220), (4, 5268165), (5, 4214532), (6, 3512110), (7, 3010380), (10, 2107266), (12, 1756055), (14, 1505190), (15, 1404844), (20, 1053633), (21, 1003460), (28, 752595), (30, 702422), (35, 602076), (42, 501730), (60, 351211), (70, 301038), (84, 250865), (105, 200692), (131, 160860), (140, 150519), (210, 100346), (262, 80430), (383, 55020), (393, 53620), (420, 50173), (524, 40215), (655, 32172), (766, 27510), (786, 26810), (917, 22980), (1149, 18340), (1310, 16086), (1532, 13755), (1572, 13405), (1834, 11490), (1915, 11004), (1965, 10724), (2298, 9170), (2620, 8043), (2681, 7860), (2751, 7660), (3668, 5745), (3830, 5502), (3930, 5362), (4585, 4596)]