21977592

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{347}}^1$

素因数の和:405

約数の個数: 128

約数和(自身を含む): 70156800

約数和(自身を除く): 48179208

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 29, 39, 42, 52, 56, 58, 78, 84, 87, 91, 104, 116, 156, 168, 174, 182, 203, 232, 273, 312, 347, 348, 364, 377, 406, 546, 609, 694, 696, 728, 754, 812, 1041, 1092, 1131, 1218, 1388, 1508, 1624, 2082, 2184, 2262, 2429, 2436, 2639, 2776, 3016, 4164, 4511, 4524, 4858, 4872, 5278, 7287, 7917, 8328, 9022, 9048, 9716, 10063, 10556, 13533, 14574, 15834, 18044, 19432, 20126, 21112, 27066, 29148, 30189, 31577, 31668, 36088, 40252, 54132, 58296, 60378, 63154, 63336, 70441, 80504, 94731, 108264, 120756, 126308, 130819, 140882, 189462, 211323, 241512, 252616, 261638, 281764, 378924, 392457, 422646, 523276, 563528, 757848, 784914, 845292, 915733, 1046552, 1569828, 1690584, 1831466, 2747199, 3139656, 3662932, 5494398, 7325864, 10988796, 21977592]

約数ペア:

[(1, 21977592), (2, 10988796), (3, 7325864), (4, 5494398), (6, 3662932), (7, 3139656), (8, 2747199), (12, 1831466), (13, 1690584), (14, 1569828), (21, 1046552), (24, 915733), (26, 845292), (28, 784914), (29, 757848), (39, 563528), (42, 523276), (52, 422646), (56, 392457), (58, 378924), (78, 281764), (84, 261638), (87, 252616), (91, 241512), (104, 211323), (116, 189462), (156, 140882), (168, 130819), (174, 126308), (182, 120756), (203, 108264), (232, 94731), (273, 80504), (312, 70441), (347, 63336), (348, 63154), (364, 60378), (377, 58296), (406, 54132), (546, 40252), (609, 36088), (694, 31668), (696, 31577), (728, 30189), (754, 29148), (812, 27066), (1041, 21112), (1092, 20126), (1131, 19432), (1218, 18044), (1388, 15834), (1508, 14574), (1624, 13533), (2082, 10556), (2184, 10063), (2262, 9716), (2429, 9048), (2436, 9022), (2639, 8328), (2776, 7917), (3016, 7287), (4164, 5278), (4511, 4872), (4524, 4858)]