21993920

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1$

素因数の和:358

約数の個数: 112

約数和(自身を含む): 59911488

約数和(自身を除く): 37917568

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 130, 136, 160, 170, 208, 221, 260, 272, 311, 320, 340, 416, 442, 520, 544, 622, 680, 832, 884, 1040, 1088, 1105, 1244, 1360, 1555, 1768, 2080, 2210, 2488, 2720, 3110, 3536, 4043, 4160, 4420, 4976, 5287, 5440, 6220, 7072, 8086, 8840, 9952, 10574, 12440, 14144, 16172, 17680, 19904, 20215, 21148, 24880, 26435, 32344, 35360, 40430, 42296, 49760, 52870, 64688, 68731, 70720, 80860, 84592, 99520, 105740, 129376, 137462, 161720, 169184, 211480, 258752, 274924, 323440, 338368, 343655, 422960, 549848, 646880, 687310, 845920, 1099696, 1293760, 1374620, 1691840, 2199392, 2749240, 4398784, 5498480, 10996960, 21993920]

約数ペア:

[(1, 21993920), (2, 10996960), (4, 5498480), (5, 4398784), (8, 2749240), (10, 2199392), (13, 1691840), (16, 1374620), (17, 1293760), (20, 1099696), (26, 845920), (32, 687310), (34, 646880), (40, 549848), (52, 422960), (64, 343655), (65, 338368), (68, 323440), (80, 274924), (85, 258752), (104, 211480), (130, 169184), (136, 161720), (160, 137462), (170, 129376), (208, 105740), (221, 99520), (260, 84592), (272, 80860), (311, 70720), (320, 68731), (340, 64688), (416, 52870), (442, 49760), (520, 42296), (544, 40430), (622, 35360), (680, 32344), (832, 26435), (884, 24880), (1040, 21148), (1088, 20215), (1105, 19904), (1244, 17680), (1360, 16172), (1555, 14144), (1768, 12440), (2080, 10574), (2210, 9952), (2488, 8840), (2720, 8086), (3110, 7072), (3536, 6220), (4043, 5440), (4160, 5287), (4420, 4976)]