20687340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1993}}^1$

素因数の和:2178

約数の個数: 48

約数和(自身を含む): 58288608

約数和(自身を除く): 37601268

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 173, 346, 519, 692, 865, 1038, 1730, 1993, 2076, 2595, 3460, 3986, 5190, 5979, 7972, 9965, 10380, 11958, 19930, 23916, 29895, 39860, 59790, 119580, 344789, 689578, 1034367, 1379156, 1723945, 2068734, 3447890, 4137468, 5171835, 6895780, 10343670, 20687340]

約数ペア:

[(1, 20687340), (2, 10343670), (3, 6895780), (4, 5171835), (5, 4137468), (6, 3447890), (10, 2068734), (12, 1723945), (15, 1379156), (20, 1034367), (30, 689578), (60, 344789), (173, 119580), (346, 59790), (519, 39860), (692, 29895), (865, 23916), (1038, 19930), (1730, 11958), (1993, 10380), (2076, 9965), (2595, 7972), (3460, 5979), (3986, 5190)]