21514620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:355

約数の個数: 96

約数和(自身を含む): 63866880

約数和(自身を除く): 42352260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 43, 60, 62, 86, 93, 124, 129, 155, 172, 186, 215, 258, 269, 310, 372, 430, 465, 516, 538, 620, 645, 807, 860, 930, 1076, 1290, 1333, 1345, 1614, 1860, 2580, 2666, 2690, 3228, 3999, 4035, 5332, 5380, 6665, 7998, 8070, 8339, 11567, 13330, 15996, 16140, 16678, 19995, 23134, 25017, 26660, 33356, 34701, 39990, 41695, 46268, 50034, 57835, 69402, 79980, 83390, 100068, 115670, 125085, 138804, 166780, 173505, 231340, 250170, 347010, 358577, 500340, 694020, 717154, 1075731, 1434308, 1792885, 2151462, 3585770, 4302924, 5378655, 7171540, 10757310, 21514620]

約数ペア:

[(1, 21514620), (2, 10757310), (3, 7171540), (4, 5378655), (5, 4302924), (6, 3585770), (10, 2151462), (12, 1792885), (15, 1434308), (20, 1075731), (30, 717154), (31, 694020), (43, 500340), (60, 358577), (62, 347010), (86, 250170), (93, 231340), (124, 173505), (129, 166780), (155, 138804), (172, 125085), (186, 115670), (215, 100068), (258, 83390), (269, 79980), (310, 69402), (372, 57835), (430, 50034), (465, 46268), (516, 41695), (538, 39990), (620, 34701), (645, 33356), (807, 26660), (860, 25017), (930, 23134), (1076, 19995), (1290, 16678), (1333, 16140), (1345, 15996), (1614, 13330), (1860, 11567), (2580, 8339), (2666, 8070), (2690, 7998), (3228, 6665), (3999, 5380), (4035, 5332)]