20328860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{877}}^1$

素因数の和:966

約数の個数: 48

約数和(自身を含む): 45726240

約数和(自身を除く): 25397380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 610, 877, 1159, 1220, 1754, 2318, 3508, 4385, 4636, 5795, 8770, 11590, 16663, 17540, 23180, 33326, 53497, 66652, 83315, 106994, 166630, 213988, 267485, 333260, 534970, 1016443, 1069940, 2032886, 4065772, 5082215, 10164430, 20328860]

約数ペア:

[(1, 20328860), (2, 10164430), (4, 5082215), (5, 4065772), (10, 2032886), (19, 1069940), (20, 1016443), (38, 534970), (61, 333260), (76, 267485), (95, 213988), (122, 166630), (190, 106994), (244, 83315), (305, 66652), (380, 53497), (610, 33326), (877, 23180), (1159, 17540), (1220, 16663), (1754, 11590), (2318, 8770), (3508, 5795), (4385, 4636)]