18813280

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3793}}^1$

素因数の和:3839

約数の個数: 48

約数和(自身を含む): 45892224

約数和(自身を除く): 27078944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 3793, 4960, 7586, 15172, 18965, 30344, 37930, 60688, 75860, 117583, 121376, 151720, 235166, 303440, 470332, 587915, 606880, 940664, 1175830, 1881328, 2351660, 3762656, 4703320, 9406640, 18813280]

約数ペア:

[(1, 18813280), (2, 9406640), (4, 4703320), (5, 3762656), (8, 2351660), (10, 1881328), (16, 1175830), (20, 940664), (31, 606880), (32, 587915), (40, 470332), (62, 303440), (80, 235166), (124, 151720), (155, 121376), (160, 117583), (248, 75860), (310, 60688), (496, 37930), (620, 30344), (992, 18965), (1240, 15172), (2480, 7586), (3793, 4960)]