18389480

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{191}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 25156120

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 83, 116, 145, 166, 191, 232, 290, 332, 382, 415, 580, 664, 764, 830, 955, 1160, 1528, 1660, 1910, 2407, 3320, 3820, 4814, 5539, 7640, 9628, 11078, 12035, 15853, 19256, 22156, 24070, 27695, 31706, 44312, 48140, 55390, 63412, 79265, 96280, 110780, 126824, 158530, 221560, 317060, 459737, 634120, 919474, 1838948, 2298685, 3677896, 4597370, 9194740, 18389480]

約数ペア:

[(1, 18389480), (2, 9194740), (4, 4597370), (5, 3677896), (8, 2298685), (10, 1838948), (20, 919474), (29, 634120), (40, 459737), (58, 317060), (83, 221560), (116, 158530), (145, 126824), (166, 110780), (191, 96280), (232, 79265), (290, 63412), (332, 55390), (382, 48140), (415, 44312), (580, 31706), (664, 27695), (764, 24070), (830, 22156), (955, 19256), (1160, 15853), (1528, 12035), (1660, 11078), (1910, 9628), (2407, 7640), (3320, 5539), (3820, 4814)]