1279211220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{21601}}^1$

素因数の和:21670

約数の個数: 144

約数和(自身を含む): 4529161728

約数和(自身を除く): 3249950508

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 47, 60, 63, 70, 84, 90, 94, 105, 126, 140, 141, 180, 188, 210, 235, 252, 282, 315, 329, 420, 423, 470, 564, 630, 658, 705, 846, 940, 987, 1260, 1316, 1410, 1645, 1692, 1974, 2115, 2820, 2961, 3290, 3948, 4230, 4935, 5922, 6580, 8460, 9870, 11844, 14805, 19740, 21601, 29610, 43202, 59220, 64803, 86404, 108005, 129606, 151207, 194409, 216010, 259212, 302414, 324015, 388818, 432020, 453621, 604828, 648030, 756035, 777636, 907242, 972045, 1015247, 1296060, 1360863, 1512070, 1814484, 1944090, 2030494, 2268105, 2721726, 3024140, 3045741, 3888180, 4060988, 4536210, 5076235, 5443452, 6091482, 6804315, 7106729, 9072420, 9137223, 10152470, 12182964, 13608630, 14213458, 15228705, 18274446, 20304940, 21320187, 27217260, 28426916, 30457410, 35533645, 36548892, 42640374, 45686115, 60914820, 63960561, 71067290, 85280748, 91372230, 106600935, 127921122, 142134580, 182744460, 213201870, 255842244, 319802805, 426403740, 639605610, 1279211220]

約数ペア:

[(1, 1279211220), (2, 639605610), (3, 426403740), (4, 319802805), (5, 255842244), (6, 213201870), (7, 182744460), (9, 142134580), (10, 127921122), (12, 106600935), (14, 91372230), (15, 85280748), (18, 71067290), (20, 63960561), (21, 60914820), (28, 45686115), (30, 42640374), (35, 36548892), (36, 35533645), (42, 30457410), (45, 28426916), (47, 27217260), (60, 21320187), (63, 20304940), (70, 18274446), (84, 15228705), (90, 14213458), (94, 13608630), (105, 12182964), (126, 10152470), (140, 9137223), (141, 9072420), (180, 7106729), (188, 6804315), (210, 6091482), (235, 5443452), (252, 5076235), (282, 4536210), (315, 4060988), (329, 3888180), (420, 3045741), (423, 3024140), (470, 2721726), (564, 2268105), (630, 2030494), (658, 1944090), (705, 1814484), (846, 1512070), (940, 1360863), (987, 1296060), (1260, 1015247), (1316, 972045), (1410, 907242), (1645, 777636), (1692, 756035), (1974, 648030), (2115, 604828), (2820, 453621), (2961, 432020), (3290, 388818), (3948, 324015), (4230, 302414), (4935, 259212), (5922, 216010), (6580, 194409), (8460, 151207), (9870, 129606), (11844, 108005), (14805, 86404), (19740, 64803), (21601, 59220), (29610, 43202)]