21859320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:565

約数の個数: 128

約数和(自身を含む): 76515840

約数和(自身を除く): 54656520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 53, 56, 60, 70, 84, 105, 106, 120, 140, 159, 168, 210, 212, 265, 280, 318, 371, 420, 424, 491, 530, 636, 742, 795, 840, 982, 1060, 1113, 1272, 1473, 1484, 1590, 1855, 1964, 2120, 2226, 2455, 2946, 2968, 3180, 3437, 3710, 3928, 4452, 4910, 5565, 5892, 6360, 6874, 7365, 7420, 8904, 9820, 10311, 11130, 11784, 13748, 14730, 14840, 17185, 19640, 20622, 22260, 26023, 27496, 29460, 34370, 41244, 44520, 51555, 52046, 58920, 68740, 78069, 82488, 103110, 104092, 130115, 137480, 156138, 182161, 206220, 208184, 260230, 312276, 364322, 390345, 412440, 520460, 546483, 624552, 728644, 780690, 910805, 1040920, 1092966, 1457288, 1561380, 1821610, 2185932, 2732415, 3122760, 3643220, 4371864, 5464830, 7286440, 10929660, 21859320]

約数ペア:

[(1, 21859320), (2, 10929660), (3, 7286440), (4, 5464830), (5, 4371864), (6, 3643220), (7, 3122760), (8, 2732415), (10, 2185932), (12, 1821610), (14, 1561380), (15, 1457288), (20, 1092966), (21, 1040920), (24, 910805), (28, 780690), (30, 728644), (35, 624552), (40, 546483), (42, 520460), (53, 412440), (56, 390345), (60, 364322), (70, 312276), (84, 260230), (105, 208184), (106, 206220), (120, 182161), (140, 156138), (159, 137480), (168, 130115), (210, 104092), (212, 103110), (265, 82488), (280, 78069), (318, 68740), (371, 58920), (420, 52046), (424, 51555), (491, 44520), (530, 41244), (636, 34370), (742, 29460), (795, 27496), (840, 26023), (982, 22260), (1060, 20622), (1113, 19640), (1272, 17185), (1473, 14840), (1484, 14730), (1590, 13748), (1855, 11784), (1964, 11130), (2120, 10311), (2226, 9820), (2455, 8904), (2946, 7420), (2968, 7365), (3180, 6874), (3437, 6360), (3710, 5892), (3928, 5565), (4452, 4910)]