20865150

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{233}}^1$

素因数の和:450

約数の個数: 72

約数和(自身を含む): 56581200

約数和(自身を除く): 35716050

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 199, 225, 233, 398, 450, 466, 597, 699, 995, 1165, 1194, 1398, 1791, 1990, 2097, 2330, 2985, 3495, 3582, 4194, 4975, 5825, 5970, 6990, 8955, 9950, 10485, 11650, 14925, 17475, 17910, 20970, 29850, 34950, 44775, 46367, 52425, 89550, 92734, 104850, 139101, 231835, 278202, 417303, 463670, 695505, 834606, 1159175, 1391010, 2086515, 2318350, 3477525, 4173030, 6955050, 10432575, 20865150]

約数ペア:

[(1, 20865150), (2, 10432575), (3, 6955050), (5, 4173030), (6, 3477525), (9, 2318350), (10, 2086515), (15, 1391010), (18, 1159175), (25, 834606), (30, 695505), (45, 463670), (50, 417303), (75, 278202), (90, 231835), (150, 139101), (199, 104850), (225, 92734), (233, 89550), (398, 52425), (450, 46367), (466, 44775), (597, 34950), (699, 29850), (995, 20970), (1165, 17910), (1194, 17475), (1398, 14925), (1791, 11650), (1990, 10485), (2097, 9950), (2330, 8955), (2985, 6990), (3495, 5970), (3582, 5825), (4194, 4975)]