21691488

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{191}}^1$

素因数の和:237

約数の個数: 144

約数和(自身を含む): 70834176

約数和(自身を除く): 49142688

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 32, 39, 42, 48, 52, 56, 78, 84, 91, 96, 104, 112, 156, 168, 169, 182, 191, 208, 224, 273, 312, 336, 338, 364, 382, 416, 507, 546, 573, 624, 672, 676, 728, 764, 1014, 1092, 1146, 1183, 1248, 1337, 1352, 1456, 1528, 2028, 2184, 2292, 2366, 2483, 2674, 2704, 2912, 3056, 3549, 4011, 4056, 4368, 4584, 4732, 4966, 5348, 5408, 6112, 7098, 7449, 8022, 8112, 8736, 9168, 9464, 9932, 10696, 14196, 14898, 16044, 16224, 17381, 18336, 18928, 19864, 21392, 28392, 29796, 32088, 32279, 34762, 37856, 39728, 42784, 52143, 56784, 59592, 64176, 64558, 69524, 79456, 96837, 104286, 113568, 119184, 128352, 129116, 139048, 193674, 208572, 225953, 238368, 258232, 278096, 387348, 417144, 451906, 516464, 556192, 677859, 774696, 834288, 903812, 1032928, 1355718, 1549392, 1668576, 1807624, 2711436, 3098784, 3615248, 5422872, 7230496, 10845744, 21691488]

約数ペア:

[(1, 21691488), (2, 10845744), (3, 7230496), (4, 5422872), (6, 3615248), (7, 3098784), (8, 2711436), (12, 1807624), (13, 1668576), (14, 1549392), (16, 1355718), (21, 1032928), (24, 903812), (26, 834288), (28, 774696), (32, 677859), (39, 556192), (42, 516464), (48, 451906), (52, 417144), (56, 387348), (78, 278096), (84, 258232), (91, 238368), (96, 225953), (104, 208572), (112, 193674), (156, 139048), (168, 129116), (169, 128352), (182, 119184), (191, 113568), (208, 104286), (224, 96837), (273, 79456), (312, 69524), (336, 64558), (338, 64176), (364, 59592), (382, 56784), (416, 52143), (507, 42784), (546, 39728), (573, 37856), (624, 34762), (672, 32279), (676, 32088), (728, 29796), (764, 28392), (1014, 21392), (1092, 19864), (1146, 18928), (1183, 18336), (1248, 17381), (1337, 16224), (1352, 16044), (1456, 14898), (1528, 14196), (2028, 10696), (2184, 9932), (2292, 9464), (2366, 9168), (2483, 8736), (2674, 8112), (2704, 8022), (2912, 7449), (3056, 7098), (3549, 6112), (4011, 5408), (4056, 5348), (4368, 4966), (4584, 4732)]