18575720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:426

約数の個数: 64

約数和(自身を含む): 44461440

約数和(自身を除く): 25885720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 61, 92, 115, 122, 184, 230, 244, 305, 331, 460, 488, 610, 662, 920, 1220, 1324, 1403, 1655, 2440, 2648, 2806, 3310, 5612, 6620, 7015, 7613, 11224, 13240, 14030, 15226, 20191, 28060, 30452, 38065, 40382, 56120, 60904, 76130, 80764, 100955, 152260, 161528, 201910, 304520, 403820, 464393, 807640, 928786, 1857572, 2321965, 3715144, 4643930, 9287860, 18575720]

約数ペア:

[(1, 18575720), (2, 9287860), (4, 4643930), (5, 3715144), (8, 2321965), (10, 1857572), (20, 928786), (23, 807640), (40, 464393), (46, 403820), (61, 304520), (92, 201910), (115, 161528), (122, 152260), (184, 100955), (230, 80764), (244, 76130), (305, 60904), (331, 56120), (460, 40382), (488, 38065), (610, 30452), (662, 28060), (920, 20191), (1220, 15226), (1324, 14030), (1403, 13240), (1655, 11224), (2440, 7613), (2648, 7015), (2806, 6620), (3310, 5612)]