90489760

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{7159}}^1$

素因数の和:7253

約数の個数: 48

約数和(自身を含む): 216518400

約数和(自身を除く): 126028640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1580, 2528, 3160, 6320, 7159, 12640, 14318, 28636, 35795, 57272, 71590, 114544, 143180, 229088, 286360, 565561, 572720, 1131122, 1145440, 2262244, 2827805, 4524488, 5655610, 9048976, 11311220, 18097952, 22622440, 45244880, 90489760]

約数ペア:

[(1, 90489760), (2, 45244880), (4, 22622440), (5, 18097952), (8, 11311220), (10, 9048976), (16, 5655610), (20, 4524488), (32, 2827805), (40, 2262244), (79, 1145440), (80, 1131122), (158, 572720), (160, 565561), (316, 286360), (395, 229088), (632, 143180), (790, 114544), (1264, 71590), (1580, 57272), (2528, 35795), (3160, 28636), (6320, 14318), (7159, 12640)]