20448420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:261

約数の個数: 96

約数和(自身を含む): 60162816

約数和(自身を除く): 39714396

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 61, 74, 111, 122, 148, 151, 183, 185, 222, 244, 302, 305, 366, 370, 444, 453, 555, 604, 610, 732, 740, 755, 906, 915, 1110, 1220, 1510, 1812, 1830, 2220, 2257, 2265, 3020, 3660, 4514, 4530, 5587, 6771, 9028, 9060, 9211, 11174, 11285, 13542, 16761, 18422, 22348, 22570, 27084, 27633, 27935, 33522, 33855, 36844, 45140, 46055, 55266, 55870, 67044, 67710, 83805, 92110, 110532, 111740, 135420, 138165, 167610, 184220, 276330, 335220, 340807, 552660, 681614, 1022421, 1363228, 1704035, 2044842, 3408070, 4089684, 5112105, 6816140, 10224210, 20448420]

約数ペア:

[(1, 20448420), (2, 10224210), (3, 6816140), (4, 5112105), (5, 4089684), (6, 3408070), (10, 2044842), (12, 1704035), (15, 1363228), (20, 1022421), (30, 681614), (37, 552660), (60, 340807), (61, 335220), (74, 276330), (111, 184220), (122, 167610), (148, 138165), (151, 135420), (183, 111740), (185, 110532), (222, 92110), (244, 83805), (302, 67710), (305, 67044), (366, 55870), (370, 55266), (444, 46055), (453, 45140), (555, 36844), (604, 33855), (610, 33522), (732, 27935), (740, 27633), (755, 27084), (906, 22570), (915, 22348), (1110, 18422), (1220, 16761), (1510, 13542), (1812, 11285), (1830, 11174), (2220, 9211), (2257, 9060), (2265, 9028), (3020, 6771), (3660, 5587), (4514, 4530)]