20452700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 48090672

約数和(自身を除く): 27637972

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 53, 68, 85, 100, 106, 170, 212, 227, 265, 340, 425, 454, 530, 850, 901, 908, 1060, 1135, 1325, 1700, 1802, 2270, 2650, 3604, 3859, 4505, 4540, 5300, 5675, 7718, 9010, 11350, 12031, 15436, 18020, 19295, 22525, 22700, 24062, 38590, 45050, 48124, 60155, 77180, 90100, 96475, 120310, 192950, 204527, 240620, 300775, 385900, 409054, 601550, 818108, 1022635, 1203100, 2045270, 4090540, 5113175, 10226350, 20452700]

約数ペア:

[(1, 20452700), (2, 10226350), (4, 5113175), (5, 4090540), (10, 2045270), (17, 1203100), (20, 1022635), (25, 818108), (34, 601550), (50, 409054), (53, 385900), (68, 300775), (85, 240620), (100, 204527), (106, 192950), (170, 120310), (212, 96475), (227, 90100), (265, 77180), (340, 60155), (425, 48124), (454, 45050), (530, 38590), (850, 24062), (901, 22700), (908, 22525), (1060, 19295), (1135, 18020), (1325, 15436), (1700, 12031), (1802, 11350), (2270, 9010), (2650, 7718), (3604, 5675), (3859, 5300), (4505, 4540)]