28464280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:153

約数の個数: 128

約数和(自身を含む): 75398400

約数和(自身を除く): 46934120

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 43, 52, 65, 67, 76, 86, 95, 104, 130, 134, 152, 172, 190, 215, 247, 260, 268, 335, 344, 380, 430, 494, 520, 536, 559, 670, 760, 817, 860, 871, 988, 1118, 1235, 1273, 1340, 1634, 1720, 1742, 1976, 2236, 2470, 2546, 2680, 2795, 2881, 3268, 3484, 4085, 4355, 4472, 4940, 5092, 5590, 5762, 6365, 6536, 6968, 8170, 8710, 9880, 10184, 10621, 11180, 11524, 12730, 14405, 16340, 16549, 17420, 21242, 22360, 23048, 25460, 28810, 32680, 33098, 34840, 37453, 42484, 50920, 53105, 54739, 57620, 66196, 74906, 82745, 84968, 106210, 109478, 115240, 132392, 149812, 165490, 187265, 212420, 218956, 273695, 299624, 330980, 374530, 424840, 437912, 547390, 661960, 711607, 749060, 1094780, 1423214, 1498120, 2189560, 2846428, 3558035, 5692856, 7116070, 14232140, 28464280]

約数ペア:

[(1, 28464280), (2, 14232140), (4, 7116070), (5, 5692856), (8, 3558035), (10, 2846428), (13, 2189560), (19, 1498120), (20, 1423214), (26, 1094780), (38, 749060), (40, 711607), (43, 661960), (52, 547390), (65, 437912), (67, 424840), (76, 374530), (86, 330980), (95, 299624), (104, 273695), (130, 218956), (134, 212420), (152, 187265), (172, 165490), (190, 149812), (215, 132392), (247, 115240), (260, 109478), (268, 106210), (335, 84968), (344, 82745), (380, 74906), (430, 66196), (494, 57620), (520, 54739), (536, 53105), (559, 50920), (670, 42484), (760, 37453), (817, 34840), (860, 33098), (871, 32680), (988, 28810), (1118, 25460), (1235, 23048), (1273, 22360), (1340, 21242), (1634, 17420), (1720, 16549), (1742, 16340), (1976, 14405), (2236, 12730), (2470, 11524), (2546, 11180), (2680, 10621), (2795, 10184), (2881, 9880), (3268, 8710), (3484, 8170), (4085, 6968), (4355, 6536), (4472, 6365), (4940, 5762), (5092, 5590)]