28913720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{65713}}^1$

素因数の和:65735

約数の個数: 32

約数和(自身を含む): 70971120

約数和(自身を除く): 42057400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 65713, 131426, 262852, 328565, 525704, 657130, 722843, 1314260, 1445686, 2628520, 2891372, 3614215, 5782744, 7228430, 14456860, 28913720]

約数ペア:

[(1, 28913720), (2, 14456860), (4, 7228430), (5, 5782744), (8, 3614215), (10, 2891372), (11, 2628520), (20, 1445686), (22, 1314260), (40, 722843), (44, 657130), (55, 525704), (88, 328565), (110, 262852), (220, 131426), (440, 65713)]