21915880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2699}}^1$

素因数の和:2746

約数の個数: 64

約数和(自身を含む): 58320000

約数和(自身を除く): 36404120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2699, 4060, 5398, 8120, 10796, 13495, 18893, 21592, 26990, 37786, 53980, 75572, 78271, 94465, 107960, 151144, 156542, 188930, 313084, 377860, 391355, 547897, 626168, 755720, 782710, 1095794, 1565420, 2191588, 2739485, 3130840, 4383176, 5478970, 10957940, 21915880]

約数ペア:

[(1, 21915880), (2, 10957940), (4, 5478970), (5, 4383176), (7, 3130840), (8, 2739485), (10, 2191588), (14, 1565420), (20, 1095794), (28, 782710), (29, 755720), (35, 626168), (40, 547897), (56, 391355), (58, 377860), (70, 313084), (116, 188930), (140, 156542), (145, 151144), (203, 107960), (232, 94465), (280, 78271), (290, 75572), (406, 53980), (580, 37786), (812, 26990), (1015, 21592), (1160, 18893), (1624, 13495), (2030, 10796), (2699, 8120), (4060, 5398)]