1388458020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{21407}}^1$

素因数の和:21489

約数の個数: 96

約数和(自身を含む): 4143218688

約数和(自身を除く): 2754760668

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 47, 60, 69, 92, 94, 115, 138, 141, 188, 230, 235, 276, 282, 345, 460, 470, 564, 690, 705, 940, 1081, 1380, 1410, 2162, 2820, 3243, 4324, 5405, 6486, 10810, 12972, 16215, 21407, 21620, 32430, 42814, 64221, 64860, 85628, 107035, 128442, 214070, 256884, 321105, 428140, 492361, 642210, 984722, 1006129, 1284420, 1477083, 1969444, 2012258, 2461805, 2954166, 3018387, 4024516, 4923610, 5030645, 5908332, 6036774, 7385415, 9847220, 10061290, 12073548, 14770830, 15091935, 20122580, 23140967, 29541660, 30183870, 46281934, 60367740, 69422901, 92563868, 115704835, 138845802, 231409670, 277691604, 347114505, 462819340, 694229010, 1388458020]

約数ペア:

[(1, 1388458020), (2, 694229010), (3, 462819340), (4, 347114505), (5, 277691604), (6, 231409670), (10, 138845802), (12, 115704835), (15, 92563868), (20, 69422901), (23, 60367740), (30, 46281934), (46, 30183870), (47, 29541660), (60, 23140967), (69, 20122580), (92, 15091935), (94, 14770830), (115, 12073548), (138, 10061290), (141, 9847220), (188, 7385415), (230, 6036774), (235, 5908332), (276, 5030645), (282, 4923610), (345, 4024516), (460, 3018387), (470, 2954166), (564, 2461805), (690, 2012258), (705, 1969444), (940, 1477083), (1081, 1284420), (1380, 1006129), (1410, 984722), (2162, 642210), (2820, 492361), (3243, 428140), (4324, 321105), (5405, 256884), (6486, 214070), (10810, 128442), (12972, 107035), (16215, 85628), (21407, 64860), (21620, 64221), (32430, 42814)]