18229850

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:255

約数の個数: 48

約数和(自身を含む): 35518560

約数和(自身を除く): 17288710

約数列:

[1, 2, 5, 10, 25, 43, 50, 61, 86, 122, 139, 215, 278, 305, 430, 610, 695, 1075, 1390, 1525, 2150, 2623, 3050, 3475, 5246, 5977, 6950, 8479, 11954, 13115, 16958, 26230, 29885, 42395, 59770, 65575, 84790, 131150, 149425, 211975, 298850, 364597, 423950, 729194, 1822985, 3645970, 9114925, 18229850]

約数ペア:

[(1, 18229850), (2, 9114925), (5, 3645970), (10, 1822985), (25, 729194), (43, 423950), (50, 364597), (61, 298850), (86, 211975), (122, 149425), (139, 131150), (215, 84790), (278, 65575), (305, 59770), (430, 42395), (610, 29885), (695, 26230), (1075, 16958), (1390, 13115), (1525, 11954), (2150, 8479), (2623, 6950), (3050, 5977), (3475, 5246)]