21538170

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{331}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 57847680

約数和(自身を除く): 36309510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 241, 270, 331, 482, 662, 723, 993, 1205, 1446, 1655, 1986, 2169, 2410, 2979, 3310, 3615, 4338, 4965, 5958, 6507, 7230, 8937, 9930, 10845, 13014, 14895, 17874, 21690, 29790, 32535, 44685, 65070, 79771, 89370, 159542, 239313, 398855, 478626, 717939, 797710, 1196565, 1435878, 2153817, 2393130, 3589695, 4307634, 7179390, 10769085, 21538170]

約数ペア:

[(1, 21538170), (2, 10769085), (3, 7179390), (5, 4307634), (6, 3589695), (9, 2393130), (10, 2153817), (15, 1435878), (18, 1196565), (27, 797710), (30, 717939), (45, 478626), (54, 398855), (90, 239313), (135, 159542), (241, 89370), (270, 79771), (331, 65070), (482, 44685), (662, 32535), (723, 29790), (993, 21690), (1205, 17874), (1446, 14895), (1655, 13014), (1986, 10845), (2169, 9930), (2410, 8937), (2979, 7230), (3310, 6507), (3615, 5958), (4338, 4965)]