6480980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 15059520

約数和(自身を除く): 8578540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 331, 356, 445, 662, 890, 979, 1324, 1655, 1780, 1958, 3310, 3641, 3916, 4895, 6620, 7282, 9790, 14564, 18205, 19580, 29459, 36410, 58918, 72820, 117836, 147295, 294590, 324049, 589180, 648098, 1296196, 1620245, 3240490, 6480980]

約数ペア:

[(1, 6480980), (2, 3240490), (4, 1620245), (5, 1296196), (10, 648098), (11, 589180), (20, 324049), (22, 294590), (44, 147295), (55, 117836), (89, 72820), (110, 58918), (178, 36410), (220, 29459), (331, 19580), (356, 18205), (445, 14564), (662, 9790), (890, 7282), (979, 6620), (1324, 4895), (1655, 3916), (1780, 3641), (1958, 3310)]