28876428

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 90737920

約数和(自身を除く): 61861492

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 37, 38, 42, 57, 63, 74, 76, 84, 111, 114, 126, 133, 148, 163, 171, 222, 228, 252, 259, 266, 326, 333, 342, 399, 444, 489, 518, 532, 652, 666, 684, 703, 777, 798, 978, 1036, 1141, 1197, 1332, 1406, 1467, 1554, 1596, 1956, 2109, 2282, 2331, 2394, 2812, 2934, 3097, 3108, 3423, 4218, 4564, 4662, 4788, 4921, 5868, 6031, 6194, 6327, 6846, 8436, 9291, 9324, 9842, 10269, 12062, 12388, 12654, 13692, 14763, 18093, 18582, 19684, 20538, 21679, 24124, 25308, 27873, 29526, 36186, 37164, 41076, 42217, 43358, 44289, 54279, 55746, 59052, 65037, 72372, 84434, 86716, 88578, 108558, 111492, 114589, 126651, 130074, 168868, 177156, 195111, 217116, 229178, 253302, 260148, 343767, 379953, 390222, 458356, 506604, 687534, 759906, 780444, 802123, 1031301, 1375068, 1519812, 1604246, 2062602, 2406369, 3208492, 4125204, 4812738, 7219107, 9625476, 14438214, 28876428]

約数ペア:

[(1, 28876428), (2, 14438214), (3, 9625476), (4, 7219107), (6, 4812738), (7, 4125204), (9, 3208492), (12, 2406369), (14, 2062602), (18, 1604246), (19, 1519812), (21, 1375068), (28, 1031301), (36, 802123), (37, 780444), (38, 759906), (42, 687534), (57, 506604), (63, 458356), (74, 390222), (76, 379953), (84, 343767), (111, 260148), (114, 253302), (126, 229178), (133, 217116), (148, 195111), (163, 177156), (171, 168868), (222, 130074), (228, 126651), (252, 114589), (259, 111492), (266, 108558), (326, 88578), (333, 86716), (342, 84434), (399, 72372), (444, 65037), (489, 59052), (518, 55746), (532, 54279), (652, 44289), (666, 43358), (684, 42217), (703, 41076), (777, 37164), (798, 36186), (978, 29526), (1036, 27873), (1141, 25308), (1197, 24124), (1332, 21679), (1406, 20538), (1467, 19684), (1554, 18582), (1596, 18093), (1956, 14763), (2109, 13692), (2282, 12654), (2331, 12388), (2394, 12062), (2812, 10269), (2934, 9842), (3097, 9324), (3108, 9291), (3423, 8436), (4218, 6846), (4564, 6327), (4662, 6194), (4788, 6031), (4921, 5868)]