21453040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1321}}^1$

素因数の和:1370

約数の個数: 80

約数和(自身を含む): 59014080

約数和(自身を除く): 37561040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 203, 232, 280, 290, 406, 464, 560, 580, 812, 1015, 1160, 1321, 1624, 2030, 2320, 2642, 3248, 4060, 5284, 6605, 8120, 9247, 10568, 13210, 16240, 18494, 21136, 26420, 36988, 38309, 46235, 52840, 73976, 76618, 92470, 105680, 147952, 153236, 184940, 191545, 268163, 306472, 369880, 383090, 536326, 612944, 739760, 766180, 1072652, 1340815, 1532360, 2145304, 2681630, 3064720, 4290608, 5363260, 10726520, 21453040]

約数ペア:

[(1, 21453040), (2, 10726520), (4, 5363260), (5, 4290608), (7, 3064720), (8, 2681630), (10, 2145304), (14, 1532360), (16, 1340815), (20, 1072652), (28, 766180), (29, 739760), (35, 612944), (40, 536326), (56, 383090), (58, 369880), (70, 306472), (80, 268163), (112, 191545), (116, 184940), (140, 153236), (145, 147952), (203, 105680), (232, 92470), (280, 76618), (290, 73976), (406, 52840), (464, 46235), (560, 38309), (580, 36988), (812, 26420), (1015, 21136), (1160, 18494), (1321, 16240), (1624, 13210), (2030, 10568), (2320, 9247), (2642, 8120), (3248, 6605), (4060, 5284)]