21703220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{829}}^1$

素因数の和:873

約数の個数: 96

約数和(自身を含む): 60238080

約数和(自身を除く): 38534860

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 55, 68, 70, 77, 85, 110, 119, 140, 154, 170, 187, 220, 238, 308, 340, 374, 385, 476, 595, 748, 770, 829, 935, 1190, 1309, 1540, 1658, 1870, 2380, 2618, 3316, 3740, 4145, 5236, 5803, 6545, 8290, 9119, 11606, 13090, 14093, 16580, 18238, 23212, 26180, 28186, 29015, 36476, 45595, 56372, 58030, 63833, 70465, 91190, 98651, 116060, 127666, 140930, 155023, 182380, 197302, 255332, 281860, 310046, 319165, 394604, 493255, 620092, 638330, 775115, 986510, 1085161, 1276660, 1550230, 1973020, 2170322, 3100460, 4340644, 5425805, 10851610, 21703220]

約数ペア:

[(1, 21703220), (2, 10851610), (4, 5425805), (5, 4340644), (7, 3100460), (10, 2170322), (11, 1973020), (14, 1550230), (17, 1276660), (20, 1085161), (22, 986510), (28, 775115), (34, 638330), (35, 620092), (44, 493255), (55, 394604), (68, 319165), (70, 310046), (77, 281860), (85, 255332), (110, 197302), (119, 182380), (140, 155023), (154, 140930), (170, 127666), (187, 116060), (220, 98651), (238, 91190), (308, 70465), (340, 63833), (374, 58030), (385, 56372), (476, 45595), (595, 36476), (748, 29015), (770, 28186), (829, 26180), (935, 23212), (1190, 18238), (1309, 16580), (1540, 14093), (1658, 13090), (1870, 11606), (2380, 9119), (2618, 8290), (3316, 6545), (3740, 5803), (4145, 5236)]