21458640

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{241}}^1$

素因数の和:317

約数の個数: 160

約数和(自身を含む): 77780736

約数和(自身を除く): 56322096

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 53, 56, 60, 70, 80, 84, 105, 106, 112, 120, 140, 159, 168, 210, 212, 240, 241, 265, 280, 318, 336, 371, 420, 424, 482, 530, 560, 636, 723, 742, 795, 840, 848, 964, 1060, 1113, 1205, 1272, 1446, 1484, 1590, 1680, 1687, 1855, 1928, 2120, 2226, 2410, 2544, 2892, 2968, 3180, 3374, 3615, 3710, 3856, 4240, 4452, 4820, 5061, 5565, 5784, 5936, 6360, 6748, 7230, 7420, 8435, 8904, 9640, 10122, 11130, 11568, 12720, 12773, 13496, 14460, 14840, 16870, 17808, 19280, 20244, 22260, 25305, 25546, 26992, 28920, 29680, 33740, 38319, 40488, 44520, 50610, 51092, 57840, 63865, 67480, 76638, 80976, 89040, 89411, 101220, 102184, 127730, 134960, 153276, 178822, 191595, 202440, 204368, 255460, 268233, 306552, 357644, 383190, 404880, 447055, 510920, 536466, 613104, 715288, 766380, 894110, 1021840, 1072932, 1341165, 1430576, 1532760, 1788220, 2145864, 2682330, 3065520, 3576440, 4291728, 5364660, 7152880, 10729320, 21458640]

約数ペア:

[(1, 21458640), (2, 10729320), (3, 7152880), (4, 5364660), (5, 4291728), (6, 3576440), (7, 3065520), (8, 2682330), (10, 2145864), (12, 1788220), (14, 1532760), (15, 1430576), (16, 1341165), (20, 1072932), (21, 1021840), (24, 894110), (28, 766380), (30, 715288), (35, 613104), (40, 536466), (42, 510920), (48, 447055), (53, 404880), (56, 383190), (60, 357644), (70, 306552), (80, 268233), (84, 255460), (105, 204368), (106, 202440), (112, 191595), (120, 178822), (140, 153276), (159, 134960), (168, 127730), (210, 102184), (212, 101220), (240, 89411), (241, 89040), (265, 80976), (280, 76638), (318, 67480), (336, 63865), (371, 57840), (420, 51092), (424, 50610), (482, 44520), (530, 40488), (560, 38319), (636, 33740), (723, 29680), (742, 28920), (795, 26992), (840, 25546), (848, 25305), (964, 22260), (1060, 20244), (1113, 19280), (1205, 17808), (1272, 16870), (1446, 14840), (1484, 14460), (1590, 13496), (1680, 12773), (1687, 12720), (1855, 11568), (1928, 11130), (2120, 10122), (2226, 9640), (2410, 8904), (2544, 8435), (2892, 7420), (2968, 7230), (3180, 6748), (3374, 6360), (3615, 5936), (3710, 5784), (3856, 5565), (4240, 5061), (4452, 4820)]