19420980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1871}}^1$

素因数の和:2056

約数の個数: 48

約数和(自身を含む): 54722304

約数和(自身を除く): 35301324

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 173, 346, 519, 692, 865, 1038, 1730, 1871, 2076, 2595, 3460, 3742, 5190, 5613, 7484, 9355, 10380, 11226, 18710, 22452, 28065, 37420, 56130, 112260, 323683, 647366, 971049, 1294732, 1618415, 1942098, 3236830, 3884196, 4855245, 6473660, 9710490, 19420980]

約数ペア:

[(1, 19420980), (2, 9710490), (3, 6473660), (4, 4855245), (5, 3884196), (6, 3236830), (10, 1942098), (12, 1618415), (15, 1294732), (20, 971049), (30, 647366), (60, 323683), (173, 112260), (346, 56130), (519, 37420), (692, 28065), (865, 22452), (1038, 18710), (1730, 11226), (1871, 10380), (2076, 9355), (2595, 7484), (3460, 5613), (3742, 5190)]