21482760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{293}}^1$

素因数の和:367

約数の個数: 128

約数和(自身を含む): 71124480

約数和(自身を除く): 49641720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 47, 52, 60, 65, 78, 94, 104, 120, 130, 141, 156, 188, 195, 235, 260, 282, 293, 312, 376, 390, 470, 520, 564, 586, 611, 705, 780, 879, 940, 1128, 1172, 1222, 1410, 1465, 1560, 1758, 1833, 1880, 2344, 2444, 2820, 2930, 3055, 3516, 3666, 3809, 4395, 4888, 5640, 5860, 6110, 7032, 7332, 7618, 8790, 9165, 11427, 11720, 12220, 13771, 14664, 15236, 17580, 18330, 19045, 22854, 24440, 27542, 30472, 35160, 36660, 38090, 41313, 45708, 55084, 57135, 68855, 73320, 76180, 82626, 91416, 110168, 114270, 137710, 152360, 165252, 179023, 206565, 228540, 275420, 330504, 358046, 413130, 457080, 537069, 550840, 716092, 826260, 895115, 1074138, 1432184, 1652520, 1790230, 2148276, 2685345, 3580460, 4296552, 5370690, 7160920, 10741380, 21482760]

約数ペア:

[(1, 21482760), (2, 10741380), (3, 7160920), (4, 5370690), (5, 4296552), (6, 3580460), (8, 2685345), (10, 2148276), (12, 1790230), (13, 1652520), (15, 1432184), (20, 1074138), (24, 895115), (26, 826260), (30, 716092), (39, 550840), (40, 537069), (47, 457080), (52, 413130), (60, 358046), (65, 330504), (78, 275420), (94, 228540), (104, 206565), (120, 179023), (130, 165252), (141, 152360), (156, 137710), (188, 114270), (195, 110168), (235, 91416), (260, 82626), (282, 76180), (293, 73320), (312, 68855), (376, 57135), (390, 55084), (470, 45708), (520, 41313), (564, 38090), (586, 36660), (611, 35160), (705, 30472), (780, 27542), (879, 24440), (940, 22854), (1128, 19045), (1172, 18330), (1222, 17580), (1410, 15236), (1465, 14664), (1560, 13771), (1758, 12220), (1833, 11720), (1880, 11427), (2344, 9165), (2444, 8790), (2820, 7618), (2930, 7332), (3055, 7032), (3516, 6110), (3666, 5860), (3809, 5640), (4395, 4888)]