21967840

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:192

約数の個数: 96

約数和(自身を含む): 55351296

約数和(自身を除く): 33383456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 43, 62, 80, 86, 103, 124, 155, 160, 172, 206, 215, 248, 310, 344, 412, 430, 496, 515, 620, 688, 824, 860, 992, 1030, 1240, 1333, 1376, 1648, 1720, 2060, 2480, 2666, 3193, 3296, 3440, 4120, 4429, 4960, 5332, 6386, 6665, 6880, 8240, 8858, 10664, 12772, 13330, 15965, 16480, 17716, 21328, 22145, 25544, 26660, 31930, 35432, 42656, 44290, 51088, 53320, 63860, 70864, 88580, 102176, 106640, 127720, 137299, 141728, 177160, 213280, 255440, 274598, 354320, 510880, 549196, 686495, 708640, 1098392, 1372990, 2196784, 2745980, 4393568, 5491960, 10983920, 21967840]

約数ペア:

[(1, 21967840), (2, 10983920), (4, 5491960), (5, 4393568), (8, 2745980), (10, 2196784), (16, 1372990), (20, 1098392), (31, 708640), (32, 686495), (40, 549196), (43, 510880), (62, 354320), (80, 274598), (86, 255440), (103, 213280), (124, 177160), (155, 141728), (160, 137299), (172, 127720), (206, 106640), (215, 102176), (248, 88580), (310, 70864), (344, 63860), (412, 53320), (430, 51088), (496, 44290), (515, 42656), (620, 35432), (688, 31930), (824, 26660), (860, 25544), (992, 22145), (1030, 21328), (1240, 17716), (1333, 16480), (1376, 15965), (1648, 13330), (1720, 12772), (2060, 10664), (2480, 8858), (2666, 8240), (3193, 6880), (3296, 6665), (3440, 6386), (4120, 5332), (4429, 4960)]