21521864

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:127

約数の個数: 128

約数和(自身を含む): 55157760

約数和(自身を除く): 33635896

約数列:

[1, 2, 4, 7, 8, 13, 14, 17, 26, 28, 34, 37, 47, 52, 56, 68, 74, 91, 94, 104, 119, 136, 148, 182, 188, 221, 238, 259, 296, 329, 364, 376, 442, 476, 481, 518, 611, 629, 658, 728, 799, 884, 952, 962, 1036, 1222, 1258, 1316, 1547, 1598, 1739, 1768, 1924, 2072, 2444, 2516, 2632, 3094, 3196, 3367, 3478, 3848, 4277, 4403, 4888, 5032, 5593, 6188, 6392, 6734, 6956, 8177, 8554, 8806, 10387, 11186, 12173, 12376, 13468, 13912, 16354, 17108, 17612, 20774, 22372, 22607, 24346, 26936, 29563, 32708, 34216, 35224, 41548, 44744, 45214, 48692, 57239, 59126, 65416, 72709, 83096, 90428, 97384, 114478, 118252, 145418, 158249, 180856, 206941, 228956, 236504, 290836, 316498, 384319, 413882, 457912, 581672, 632996, 768638, 827764, 1265992, 1537276, 1655528, 2690233, 3074552, 5380466, 10760932, 21521864]

約数ペア:

[(1, 21521864), (2, 10760932), (4, 5380466), (7, 3074552), (8, 2690233), (13, 1655528), (14, 1537276), (17, 1265992), (26, 827764), (28, 768638), (34, 632996), (37, 581672), (47, 457912), (52, 413882), (56, 384319), (68, 316498), (74, 290836), (91, 236504), (94, 228956), (104, 206941), (119, 180856), (136, 158249), (148, 145418), (182, 118252), (188, 114478), (221, 97384), (238, 90428), (259, 83096), (296, 72709), (329, 65416), (364, 59126), (376, 57239), (442, 48692), (476, 45214), (481, 44744), (518, 41548), (611, 35224), (629, 34216), (658, 32708), (728, 29563), (799, 26936), (884, 24346), (952, 22607), (962, 22372), (1036, 20774), (1222, 17612), (1258, 17108), (1316, 16354), (1547, 13912), (1598, 13468), (1739, 12376), (1768, 12173), (1924, 11186), (2072, 10387), (2444, 8806), (2516, 8554), (2632, 8177), (3094, 6956), (3196, 6734), (3367, 6392), (3478, 6188), (3848, 5593), (4277, 5032), (4403, 4888)]