30445720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:656

約数の個数: 64

約数和(自身を含む): 72483840

約数和(自身を除く): 42038120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 430, 571, 620, 860, 1142, 1240, 1333, 1720, 2284, 2666, 2855, 4568, 5332, 5710, 6665, 10664, 11420, 13330, 17701, 22840, 24553, 26660, 35402, 49106, 53320, 70804, 88505, 98212, 122765, 141608, 177010, 196424, 245530, 354020, 491060, 708040, 761143, 982120, 1522286, 3044572, 3805715, 6089144, 7611430, 15222860, 30445720]

約数ペア:

[(1, 30445720), (2, 15222860), (4, 7611430), (5, 6089144), (8, 3805715), (10, 3044572), (20, 1522286), (31, 982120), (40, 761143), (43, 708040), (62, 491060), (86, 354020), (124, 245530), (155, 196424), (172, 177010), (215, 141608), (248, 122765), (310, 98212), (344, 88505), (430, 70804), (571, 53320), (620, 49106), (860, 35402), (1142, 26660), (1240, 24553), (1333, 22840), (1720, 17701), (2284, 13330), (2666, 11420), (2855, 10664), (4568, 6665), (5332, 5710)]