21418725

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 38086848

約数和(自身を除く): 16668123

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 107, 157, 255, 321, 425, 471, 535, 785, 1275, 1605, 1819, 2355, 2669, 2675, 3925, 5457, 8007, 8025, 9095, 11775, 13345, 16799, 27285, 40035, 45475, 50397, 66725, 83995, 136425, 200175, 251985, 285583, 419975, 856749, 1259925, 1427915, 4283745, 7139575, 21418725]

約数ペア:

[(1, 21418725), (3, 7139575), (5, 4283745), (15, 1427915), (17, 1259925), (25, 856749), (51, 419975), (75, 285583), (85, 251985), (107, 200175), (157, 136425), (255, 83995), (321, 66725), (425, 50397), (471, 45475), (535, 40035), (785, 27285), (1275, 16799), (1605, 13345), (1819, 11775), (2355, 9095), (2669, 8025), (2675, 8007), (3925, 5457)]