28305388120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{401381}}^1$

素因数の和:401476

約数の個数: 64

約数和(自身を含む): 66757854240

約数和(自身を除く): 38452466120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 164, 172, 205, 215, 328, 344, 410, 430, 820, 860, 1640, 1720, 1763, 3526, 7052, 8815, 14104, 17630, 35260, 70520, 401381, 802762, 1605524, 2006905, 3211048, 4013810, 8027620, 16055240, 16456621, 17259383, 32913242, 34518766, 65826484, 69037532, 82283105, 86296915, 131652968, 138075064, 164566210, 172593830, 329132420, 345187660, 658264840, 690375320, 707634703, 1415269406, 2830538812, 3538173515, 5661077624, 7076347030, 14152694060, 28305388120]

約数ペア:

[(1, 28305388120), (2, 14152694060), (4, 7076347030), (5, 5661077624), (8, 3538173515), (10, 2830538812), (20, 1415269406), (40, 707634703), (41, 690375320), (43, 658264840), (82, 345187660), (86, 329132420), (164, 172593830), (172, 164566210), (205, 138075064), (215, 131652968), (328, 86296915), (344, 82283105), (410, 69037532), (430, 65826484), (820, 34518766), (860, 32913242), (1640, 17259383), (1720, 16456621), (1763, 16055240), (3526, 8027620), (7052, 4013810), (8815, 3211048), (14104, 2006905), (17630, 1605524), (35260, 802762), (70520, 401381)]