7709180

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 16873920

約数和(自身を除く): 9164740

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 89, 122, 142, 178, 244, 284, 305, 355, 356, 445, 610, 710, 890, 1220, 1420, 1780, 4331, 5429, 6319, 8662, 10858, 12638, 17324, 21655, 21716, 25276, 27145, 31595, 43310, 54290, 63190, 86620, 108580, 126380, 385459, 770918, 1541836, 1927295, 3854590, 7709180]

約数ペア:

[(1, 7709180), (2, 3854590), (4, 1927295), (5, 1541836), (10, 770918), (20, 385459), (61, 126380), (71, 108580), (89, 86620), (122, 63190), (142, 54290), (178, 43310), (244, 31595), (284, 27145), (305, 25276), (355, 21716), (356, 21655), (445, 17324), (610, 12638), (710, 10858), (890, 8662), (1220, 6319), (1420, 5429), (1780, 4331)]