18889360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:488

約数の個数: 80

約数和(自身を含む): 50889600

約数和(自身を除く): 32000240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 379, 445, 560, 623, 712, 758, 890, 1246, 1424, 1516, 1780, 1895, 2492, 2653, 3032, 3115, 3560, 3790, 4984, 5306, 6064, 6230, 7120, 7580, 9968, 10612, 12460, 13265, 15160, 21224, 24920, 26530, 30320, 33731, 42448, 49840, 53060, 67462, 106120, 134924, 168655, 212240, 236117, 269848, 337310, 472234, 539696, 674620, 944468, 1180585, 1349240, 1888936, 2361170, 2698480, 3777872, 4722340, 9444680, 18889360]

約数ペア:

[(1, 18889360), (2, 9444680), (4, 4722340), (5, 3777872), (7, 2698480), (8, 2361170), (10, 1888936), (14, 1349240), (16, 1180585), (20, 944468), (28, 674620), (35, 539696), (40, 472234), (56, 337310), (70, 269848), (80, 236117), (89, 212240), (112, 168655), (140, 134924), (178, 106120), (280, 67462), (356, 53060), (379, 49840), (445, 42448), (560, 33731), (623, 30320), (712, 26530), (758, 24920), (890, 21224), (1246, 15160), (1424, 13265), (1516, 12460), (1780, 10612), (1895, 9968), (2492, 7580), (2653, 7120), (3032, 6230), (3115, 6064), (3560, 5306), (3790, 4984)]