81447870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:322

約数の個数: 128

約数和(自身を含む): 238464000

約数和(自身を除く): 157016130

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 137, 149, 190, 210, 266, 274, 285, 298, 399, 411, 447, 570, 665, 685, 745, 798, 822, 894, 959, 1043, 1330, 1370, 1490, 1918, 1995, 2055, 2086, 2235, 2603, 2831, 2877, 3129, 3990, 4110, 4470, 4795, 5206, 5215, 5662, 5754, 6258, 7809, 8493, 9590, 10430, 13015, 14155, 14385, 15618, 15645, 16986, 18221, 19817, 20413, 26030, 28310, 28770, 31290, 36442, 39045, 39634, 40826, 42465, 54663, 59451, 61239, 78090, 84930, 91105, 99085, 102065, 109326, 118902, 122478, 142891, 182210, 198170, 204130, 273315, 285782, 297255, 306195, 387847, 428673, 546630, 594510, 612390, 714455, 775694, 857346, 1163541, 1428910, 1939235, 2143365, 2327082, 2714929, 3878470, 4286730, 5429858, 5817705, 8144787, 11635410, 13574645, 16289574, 27149290, 40723935, 81447870]

約数ペア:

[(1, 81447870), (2, 40723935), (3, 27149290), (5, 16289574), (6, 13574645), (7, 11635410), (10, 8144787), (14, 5817705), (15, 5429858), (19, 4286730), (21, 3878470), (30, 2714929), (35, 2327082), (38, 2143365), (42, 1939235), (57, 1428910), (70, 1163541), (95, 857346), (105, 775694), (114, 714455), (133, 612390), (137, 594510), (149, 546630), (190, 428673), (210, 387847), (266, 306195), (274, 297255), (285, 285782), (298, 273315), (399, 204130), (411, 198170), (447, 182210), (570, 142891), (665, 122478), (685, 118902), (745, 109326), (798, 102065), (822, 99085), (894, 91105), (959, 84930), (1043, 78090), (1330, 61239), (1370, 59451), (1490, 54663), (1918, 42465), (1995, 40826), (2055, 39634), (2086, 39045), (2235, 36442), (2603, 31290), (2831, 28770), (2877, 28310), (3129, 26030), (3990, 20413), (4110, 19817), (4470, 18221), (4795, 16986), (5206, 15645), (5215, 15618), (5662, 14385), (5754, 14155), (6258, 13015), (7809, 10430), (8493, 9590)]