81489100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{557}}^1$

素因数の和:608

約数の個数: 144

約数和(自身を含む): 232485120

約数和(自身を除く): 150996020

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 25, 28, 35, 38, 44, 50, 55, 70, 76, 77, 95, 100, 110, 133, 140, 154, 175, 190, 209, 220, 266, 275, 308, 350, 380, 385, 418, 475, 532, 550, 557, 665, 700, 770, 836, 950, 1045, 1100, 1114, 1330, 1463, 1540, 1900, 1925, 2090, 2228, 2660, 2785, 2926, 3325, 3850, 3899, 4180, 5225, 5570, 5852, 6127, 6650, 7315, 7700, 7798, 10450, 10583, 11140, 12254, 13300, 13925, 14630, 15596, 19495, 20900, 21166, 24508, 27850, 29260, 30635, 36575, 38990, 42332, 42889, 52915, 55700, 61270, 73150, 74081, 77980, 85778, 97475, 105830, 116413, 122540, 146300, 148162, 153175, 171556, 194950, 211660, 214445, 232826, 264575, 296324, 306350, 370405, 389900, 428890, 465652, 529150, 582065, 612700, 740810, 814891, 857780, 1058300, 1072225, 1164130, 1481620, 1629782, 1852025, 2144450, 2328260, 2910325, 3259564, 3704050, 4074455, 4288900, 5820650, 7408100, 8148910, 11641300, 16297820, 20372275, 40744550, 81489100]

約数ペア:

[(1, 81489100), (2, 40744550), (4, 20372275), (5, 16297820), (7, 11641300), (10, 8148910), (11, 7408100), (14, 5820650), (19, 4288900), (20, 4074455), (22, 3704050), (25, 3259564), (28, 2910325), (35, 2328260), (38, 2144450), (44, 1852025), (50, 1629782), (55, 1481620), (70, 1164130), (76, 1072225), (77, 1058300), (95, 857780), (100, 814891), (110, 740810), (133, 612700), (140, 582065), (154, 529150), (175, 465652), (190, 428890), (209, 389900), (220, 370405), (266, 306350), (275, 296324), (308, 264575), (350, 232826), (380, 214445), (385, 211660), (418, 194950), (475, 171556), (532, 153175), (550, 148162), (557, 146300), (665, 122540), (700, 116413), (770, 105830), (836, 97475), (950, 85778), (1045, 77980), (1100, 74081), (1114, 73150), (1330, 61270), (1463, 55700), (1540, 52915), (1900, 42889), (1925, 42332), (2090, 38990), (2228, 36575), (2660, 30635), (2785, 29260), (2926, 27850), (3325, 24508), (3850, 21166), (3899, 20900), (4180, 19495), (5225, 15596), (5570, 14630), (5852, 13925), (6127, 13300), (6650, 12254), (7315, 11140), (7700, 10583), (7798, 10450)]