2220720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{487}}^1$

素因数の和:522

約数の個数: 80

約数和(自身を含む): 7261440

約数和(自身を除く): 5040720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 285, 304, 380, 456, 487, 570, 760, 912, 974, 1140, 1461, 1520, 1948, 2280, 2435, 2922, 3896, 4560, 4870, 5844, 7305, 7792, 9253, 9740, 11688, 14610, 18506, 19480, 23376, 27759, 29220, 37012, 38960, 46265, 55518, 58440, 74024, 92530, 111036, 116880, 138795, 148048, 185060, 222072, 277590, 370120, 444144, 555180, 740240, 1110360, 2220720]

約数ペア:

[(1, 2220720), (2, 1110360), (3, 740240), (4, 555180), (5, 444144), (6, 370120), (8, 277590), (10, 222072), (12, 185060), (15, 148048), (16, 138795), (19, 116880), (20, 111036), (24, 92530), (30, 74024), (38, 58440), (40, 55518), (48, 46265), (57, 38960), (60, 37012), (76, 29220), (80, 27759), (95, 23376), (114, 19480), (120, 18506), (152, 14610), (190, 11688), (228, 9740), (240, 9253), (285, 7792), (304, 7305), (380, 5844), (456, 4870), (487, 4560), (570, 3896), (760, 2922), (912, 2435), (974, 2280), (1140, 1948), (1461, 1520)]