18264580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 40158720

約数和(自身を除く): 21894140

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 331, 356, 445, 620, 662, 890, 1324, 1655, 1780, 2759, 3310, 5518, 6620, 10261, 11036, 13795, 20522, 27590, 29459, 41044, 51305, 55180, 58918, 102610, 117836, 147295, 205220, 294590, 589180, 913229, 1826458, 3652916, 4566145, 9132290, 18264580]

約数ペア:

[(1, 18264580), (2, 9132290), (4, 4566145), (5, 3652916), (10, 1826458), (20, 913229), (31, 589180), (62, 294590), (89, 205220), (124, 147295), (155, 117836), (178, 102610), (310, 58918), (331, 55180), (356, 51305), (445, 41044), (620, 29459), (662, 27590), (890, 20522), (1324, 13795), (1655, 11036), (1780, 10261), (2759, 6620), (3310, 5518)]