205221720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{1453}}^1$

素因数の和:1585

約数の個数: 128

約数和(自身を含む): 678378240

約数和(自身を除く): 473156520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 107, 110, 120, 132, 165, 214, 220, 264, 321, 330, 428, 440, 535, 642, 660, 856, 1070, 1177, 1284, 1320, 1453, 1605, 2140, 2354, 2568, 2906, 3210, 3531, 4280, 4359, 4708, 5812, 5885, 6420, 7062, 7265, 8718, 9416, 11624, 11770, 12840, 14124, 14530, 15983, 17436, 17655, 21795, 23540, 28248, 29060, 31966, 34872, 35310, 43590, 47080, 47949, 58120, 63932, 70620, 79915, 87180, 95898, 127864, 141240, 155471, 159830, 174360, 191796, 239745, 310942, 319660, 383592, 466413, 479490, 621884, 639320, 777355, 932826, 958980, 1243768, 1554710, 1710181, 1865652, 1917960, 2332065, 3109420, 3420362, 3731304, 4664130, 5130543, 6218840, 6840724, 8550905, 9328260, 10261086, 13681448, 17101810, 18656520, 20522172, 25652715, 34203620, 41044344, 51305430, 68407240, 102610860, 205221720]

約数ペア:

[(1, 205221720), (2, 102610860), (3, 68407240), (4, 51305430), (5, 41044344), (6, 34203620), (8, 25652715), (10, 20522172), (11, 18656520), (12, 17101810), (15, 13681448), (20, 10261086), (22, 9328260), (24, 8550905), (30, 6840724), (33, 6218840), (40, 5130543), (44, 4664130), (55, 3731304), (60, 3420362), (66, 3109420), (88, 2332065), (107, 1917960), (110, 1865652), (120, 1710181), (132, 1554710), (165, 1243768), (214, 958980), (220, 932826), (264, 777355), (321, 639320), (330, 621884), (428, 479490), (440, 466413), (535, 383592), (642, 319660), (660, 310942), (856, 239745), (1070, 191796), (1177, 174360), (1284, 159830), (1320, 155471), (1453, 141240), (1605, 127864), (2140, 95898), (2354, 87180), (2568, 79915), (2906, 70620), (3210, 63932), (3531, 58120), (4280, 47949), (4359, 47080), (4708, 43590), (5812, 35310), (5885, 34872), (6420, 31966), (7062, 29060), (7265, 28248), (8718, 23540), (9416, 21795), (11624, 17655), (11770, 17436), (12840, 15983), (14124, 14530)]