21172788

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:334

約数の個数: 144

約数和(自身を含む): 68979456

約数和(自身を除く): 47806668

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 23, 26, 28, 36, 39, 42, 46, 52, 63, 69, 78, 84, 91, 92, 117, 126, 138, 156, 161, 182, 207, 234, 252, 273, 276, 281, 299, 322, 364, 414, 468, 483, 546, 562, 598, 644, 819, 828, 843, 897, 966, 1092, 1124, 1196, 1449, 1638, 1686, 1794, 1932, 1967, 2093, 2529, 2691, 2898, 3276, 3372, 3588, 3653, 3934, 4186, 5058, 5382, 5796, 5901, 6279, 6463, 7306, 7868, 8372, 10116, 10764, 10959, 11802, 12558, 12926, 14612, 17703, 18837, 19389, 21918, 23604, 25116, 25571, 25852, 32877, 35406, 37674, 38778, 43836, 45241, 51142, 58167, 65754, 70812, 75348, 76713, 77556, 84019, 90482, 102284, 116334, 131508, 135723, 153426, 168038, 180964, 230139, 232668, 252057, 271446, 306852, 336076, 407169, 460278, 504114, 542892, 588133, 756171, 814338, 920556, 1008228, 1176266, 1512342, 1628676, 1764399, 2352532, 3024684, 3528798, 5293197, 7057596, 10586394, 21172788]

約数ペア:

[(1, 21172788), (2, 10586394), (3, 7057596), (4, 5293197), (6, 3528798), (7, 3024684), (9, 2352532), (12, 1764399), (13, 1628676), (14, 1512342), (18, 1176266), (21, 1008228), (23, 920556), (26, 814338), (28, 756171), (36, 588133), (39, 542892), (42, 504114), (46, 460278), (52, 407169), (63, 336076), (69, 306852), (78, 271446), (84, 252057), (91, 232668), (92, 230139), (117, 180964), (126, 168038), (138, 153426), (156, 135723), (161, 131508), (182, 116334), (207, 102284), (234, 90482), (252, 84019), (273, 77556), (276, 76713), (281, 75348), (299, 70812), (322, 65754), (364, 58167), (414, 51142), (468, 45241), (483, 43836), (546, 38778), (562, 37674), (598, 35406), (644, 32877), (819, 25852), (828, 25571), (843, 25116), (897, 23604), (966, 21918), (1092, 19389), (1124, 18837), (1196, 17703), (1449, 14612), (1638, 12926), (1686, 12558), (1794, 11802), (1932, 10959), (1967, 10764), (2093, 10116), (2529, 8372), (2691, 7868), (2898, 7306), (3276, 6463), (3372, 6279), (3588, 5901), (3653, 5796), (3934, 5382), (4186, 5058)]