18071450

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 48

約数和(自身を含む): 35354880

約数和(自身を除く): 17283430

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 89, 131, 155, 178, 262, 310, 445, 655, 775, 890, 1310, 1550, 2225, 2759, 3275, 4061, 4450, 5518, 6550, 8122, 11659, 13795, 20305, 23318, 27590, 40610, 58295, 68975, 101525, 116590, 137950, 203050, 291475, 361429, 582950, 722858, 1807145, 3614290, 9035725, 18071450]

約数ペア:

[(1, 18071450), (2, 9035725), (5, 3614290), (10, 1807145), (25, 722858), (31, 582950), (50, 361429), (62, 291475), (89, 203050), (131, 137950), (155, 116590), (178, 101525), (262, 68975), (310, 58295), (445, 40610), (655, 27590), (775, 23318), (890, 20305), (1310, 13795), (1550, 11659), (2225, 8122), (2759, 6550), (3275, 5518), (4061, 4450)]