21476180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:165

約数の個数: 96

約数和(自身を含む): 52641792

約数和(自身を除く): 31165612

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 47, 55, 62, 67, 94, 110, 124, 134, 155, 188, 220, 235, 268, 310, 335, 341, 470, 517, 620, 670, 682, 737, 940, 1034, 1340, 1364, 1457, 1474, 1705, 2068, 2077, 2585, 2914, 2948, 3149, 3410, 3685, 4154, 5170, 5828, 6298, 6820, 7285, 7370, 8308, 10340, 10385, 12596, 14570, 14740, 15745, 16027, 20770, 22847, 29140, 31490, 32054, 34639, 41540, 45694, 62980, 64108, 69278, 80135, 91388, 97619, 114235, 138556, 160270, 173195, 195238, 228470, 320540, 346390, 390476, 456940, 488095, 692780, 976190, 1073809, 1952380, 2147618, 4295236, 5369045, 10738090, 21476180]

約数ペア:

[(1, 21476180), (2, 10738090), (4, 5369045), (5, 4295236), (10, 2147618), (11, 1952380), (20, 1073809), (22, 976190), (31, 692780), (44, 488095), (47, 456940), (55, 390476), (62, 346390), (67, 320540), (94, 228470), (110, 195238), (124, 173195), (134, 160270), (155, 138556), (188, 114235), (220, 97619), (235, 91388), (268, 80135), (310, 69278), (335, 64108), (341, 62980), (470, 45694), (517, 41540), (620, 34639), (670, 32054), (682, 31490), (737, 29140), (940, 22847), (1034, 20770), (1340, 16027), (1364, 15745), (1457, 14740), (1474, 14570), (1705, 12596), (2068, 10385), (2077, 10340), (2585, 8308), (2914, 7370), (2948, 7285), (3149, 6820), (3410, 6298), (3685, 5828), (4154, 5170)]