19922980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{761}}^1$

素因数の和:805

約数の個数: 96

約数和(自身を含む): 55302912

約数和(自身を除く): 35379932

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, 761, 770, 935, 1190, 1309, 1522, 1540, 1870, 2380, 2618, 3044, 3740, 3805, 5236, 5327, 6545, 7610, 8371, 10654, 12937, 13090, 15220, 16742, 21308, 25874, 26180, 26635, 33484, 41855, 51748, 53270, 58597, 64685, 83710, 90559, 106540, 117194, 129370, 142307, 167420, 181118, 234388, 258740, 284614, 292985, 362236, 452795, 569228, 585970, 711535, 905590, 996149, 1171940, 1423070, 1811180, 1992298, 2846140, 3984596, 4980745, 9961490, 19922980]

約数ペア:

[(1, 19922980), (2, 9961490), (4, 4980745), (5, 3984596), (7, 2846140), (10, 1992298), (11, 1811180), (14, 1423070), (17, 1171940), (20, 996149), (22, 905590), (28, 711535), (34, 585970), (35, 569228), (44, 452795), (55, 362236), (68, 292985), (70, 284614), (77, 258740), (85, 234388), (110, 181118), (119, 167420), (140, 142307), (154, 129370), (170, 117194), (187, 106540), (220, 90559), (238, 83710), (308, 64685), (340, 58597), (374, 53270), (385, 51748), (476, 41855), (595, 33484), (748, 26635), (761, 26180), (770, 25874), (935, 21308), (1190, 16742), (1309, 15220), (1522, 13090), (1540, 12937), (1870, 10654), (2380, 8371), (2618, 7610), (3044, 6545), (3740, 5327), (3805, 5236)]