20120237440

素因数分解:

$2^7\times 5^1\times {\mathrm{223}}^1\times {\mathrm{140977}}^1$

素因数の和:141219

約数の個数: 64

約数和(自身を含む): 48315980160

約数和(自身を除く): 28195742720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 223, 320, 446, 640, 892, 1115, 1784, 2230, 3568, 4460, 7136, 8920, 14272, 17840, 28544, 35680, 71360, 140977, 142720, 281954, 563908, 704885, 1127816, 1409770, 2255632, 2819540, 4511264, 5639080, 9022528, 11278160, 18045056, 22556320, 31437871, 45112640, 62875742, 90225280, 125751484, 157189355, 251502968, 314378710, 503005936, 628757420, 1006011872, 1257514840, 2012023744, 2515029680, 4024047488, 5030059360, 10060118720, 20120237440]

約数ペア:

[(1, 20120237440), (2, 10060118720), (4, 5030059360), (5, 4024047488), (8, 2515029680), (10, 2012023744), (16, 1257514840), (20, 1006011872), (32, 628757420), (40, 503005936), (64, 314378710), (80, 251502968), (128, 157189355), (160, 125751484), (223, 90225280), (320, 62875742), (446, 45112640), (640, 31437871), (892, 22556320), (1115, 18045056), (1784, 11278160), (2230, 9022528), (3568, 5639080), (4460, 4511264), (7136, 2819540), (8920, 2255632), (14272, 1409770), (17840, 1127816), (28544, 704885), (35680, 563908), (71360, 281954), (140977, 142720)]