28378640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11443}}^1$

素因数の和:11487

約数の個数: 40

約数和(自身を含む): 68114688

約数和(自身を除く): 39736048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 11443, 22886, 45772, 57215, 91544, 114430, 183088, 228860, 354733, 457720, 709466, 915440, 1418932, 1773665, 2837864, 3547330, 5675728, 7094660, 14189320, 28378640]

約数ペア:

[(1, 28378640), (2, 14189320), (4, 7094660), (5, 5675728), (8, 3547330), (10, 2837864), (16, 1773665), (20, 1418932), (31, 915440), (40, 709466), (62, 457720), (80, 354733), (124, 228860), (155, 183088), (248, 114430), (310, 91544), (496, 57215), (620, 45772), (1240, 22886), (2480, 11443)]