21945050

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 42720480

約数和(自身を除く): 20775430

約数列:

[1, 2, 5, 10, 25, 43, 50, 59, 86, 118, 173, 215, 295, 346, 430, 590, 865, 1075, 1475, 1730, 2150, 2537, 2950, 4325, 5074, 7439, 8650, 10207, 12685, 14878, 20414, 25370, 37195, 51035, 63425, 74390, 102070, 126850, 185975, 255175, 371950, 438901, 510350, 877802, 2194505, 4389010, 10972525, 21945050]

約数ペア:

[(1, 21945050), (2, 10972525), (5, 4389010), (10, 2194505), (25, 877802), (43, 510350), (50, 438901), (59, 371950), (86, 255175), (118, 185975), (173, 126850), (215, 102070), (295, 74390), (346, 63425), (430, 51035), (590, 37195), (865, 25370), (1075, 20414), (1475, 14878), (1730, 12685), (2150, 10207), (2537, 8650), (2950, 7439), (4325, 5074)]