28821100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 82494720

約数和(自身を除く): 53673620

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, 197, 209, 220, 266, 275, 308, 350, 380, 385, 394, 418, 475, 532, 550, 665, 700, 770, 788, 836, 950, 985, 1045, 1100, 1330, 1379, 1463, 1540, 1900, 1925, 1970, 2090, 2167, 2660, 2758, 2926, 3325, 3743, 3850, 3940, 4180, 4334, 4925, 5225, 5516, 5852, 6650, 6895, 7315, 7486, 7700, 8668, 9850, 10450, 10835, 13300, 13790, 14630, 14972, 15169, 18715, 19700, 20900, 21670, 26201, 27580, 29260, 30338, 34475, 36575, 37430, 41173, 43340, 52402, 54175, 60676, 68950, 73150, 74860, 75845, 82346, 93575, 104804, 108350, 131005, 137900, 146300, 151690, 164692, 187150, 205865, 216700, 262010, 288211, 303380, 374300, 379225, 411730, 524020, 576422, 655025, 758450, 823460, 1029325, 1152844, 1310050, 1441055, 1516900, 2058650, 2620100, 2882110, 4117300, 5764220, 7205275, 14410550, 28821100]

約数ペア:

[(1, 28821100), (2, 14410550), (4, 7205275), (5, 5764220), (7, 4117300), (10, 2882110), (11, 2620100), (14, 2058650), (19, 1516900), (20, 1441055), (22, 1310050), (25, 1152844), (28, 1029325), (35, 823460), (38, 758450), (44, 655025), (50, 576422), (55, 524020), (70, 411730), (76, 379225), (77, 374300), (95, 303380), (100, 288211), (110, 262010), (133, 216700), (140, 205865), (154, 187150), (175, 164692), (190, 151690), (197, 146300), (209, 137900), (220, 131005), (266, 108350), (275, 104804), (308, 93575), (350, 82346), (380, 75845), (385, 74860), (394, 73150), (418, 68950), (475, 60676), (532, 54175), (550, 52402), (665, 43340), (700, 41173), (770, 37430), (788, 36575), (836, 34475), (950, 30338), (985, 29260), (1045, 27580), (1100, 26201), (1330, 21670), (1379, 20900), (1463, 19700), (1540, 18715), (1900, 15169), (1925, 14972), (1970, 14630), (2090, 13790), (2167, 13300), (2660, 10835), (2758, 10450), (2926, 9850), (3325, 8668), (3743, 7700), (3850, 7486), (3940, 7315), (4180, 6895), (4334, 6650), (4925, 5852), (5225, 5516)]