21264240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2161}}^1$

素因数の和:2218

約数の個数: 80

約数和(自身を含む): 67558176

約数和(自身を除く): 46293936

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 41, 48, 60, 80, 82, 120, 123, 164, 205, 240, 246, 328, 410, 492, 615, 656, 820, 984, 1230, 1640, 1968, 2161, 2460, 3280, 4322, 4920, 6483, 8644, 9840, 10805, 12966, 17288, 21610, 25932, 32415, 34576, 43220, 51864, 64830, 86440, 88601, 103728, 129660, 172880, 177202, 259320, 265803, 354404, 443005, 518640, 531606, 708808, 886010, 1063212, 1329015, 1417616, 1772020, 2126424, 2658030, 3544040, 4252848, 5316060, 7088080, 10632120, 21264240]

約数ペア:

[(1, 21264240), (2, 10632120), (3, 7088080), (4, 5316060), (5, 4252848), (6, 3544040), (8, 2658030), (10, 2126424), (12, 1772020), (15, 1417616), (16, 1329015), (20, 1063212), (24, 886010), (30, 708808), (40, 531606), (41, 518640), (48, 443005), (60, 354404), (80, 265803), (82, 259320), (120, 177202), (123, 172880), (164, 129660), (205, 103728), (240, 88601), (246, 86440), (328, 64830), (410, 51864), (492, 43220), (615, 34576), (656, 32415), (820, 25932), (984, 21610), (1230, 17288), (1640, 12966), (1968, 10805), (2161, 9840), (2460, 8644), (3280, 6483), (4322, 4920)]