19990710

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{571}}^1$

素因数の和:973

約数の個数: 48

約数和(自身を含む): 52200720

約数和(自身を除く): 32210010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 389, 571, 778, 1142, 1167, 1713, 1945, 2334, 2855, 3426, 3501, 3890, 5139, 5710, 5835, 7002, 8565, 10278, 11670, 17130, 17505, 25695, 35010, 51390, 222119, 444238, 666357, 1110595, 1332714, 1999071, 2221190, 3331785, 3998142, 6663570, 9995355, 19990710]

約数ペア:

[(1, 19990710), (2, 9995355), (3, 6663570), (5, 3998142), (6, 3331785), (9, 2221190), (10, 1999071), (15, 1332714), (18, 1110595), (30, 666357), (45, 444238), (90, 222119), (389, 51390), (571, 35010), (778, 25695), (1142, 17505), (1167, 17130), (1713, 11670), (1945, 10278), (2334, 8565), (2855, 7002), (3426, 5835), (3501, 5710), (3890, 5139)]