1279681700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{911}}^1\times {\mathrm{1277}}^1$

素因数の和:2213

約数の個数: 72

約数和(自身を含む): 3035055744

約数和(自身を除く): 1755374044

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 911, 1100, 1277, 1822, 2554, 3644, 4555, 5108, 6385, 9110, 10021, 12770, 14047, 18220, 20042, 22775, 25540, 28094, 31925, 40084, 45550, 50105, 56188, 63850, 70235, 91100, 100210, 127700, 140470, 200420, 250525, 280940, 351175, 501050, 702350, 1002100, 1163347, 1404700, 2326694, 4653388, 5816735, 11633470, 12796817, 23266940, 25593634, 29083675, 51187268, 58167350, 63984085, 116334700, 127968170, 255936340, 319920425, 639840850, 1279681700]

約数ペア:

[(1, 1279681700), (2, 639840850), (4, 319920425), (5, 255936340), (10, 127968170), (11, 116334700), (20, 63984085), (22, 58167350), (25, 51187268), (44, 29083675), (50, 25593634), (55, 23266940), (100, 12796817), (110, 11633470), (220, 5816735), (275, 4653388), (550, 2326694), (911, 1404700), (1100, 1163347), (1277, 1002100), (1822, 702350), (2554, 501050), (3644, 351175), (4555, 280940), (5108, 250525), (6385, 200420), (9110, 140470), (10021, 127700), (12770, 100210), (14047, 91100), (18220, 70235), (20042, 63850), (22775, 56188), (25540, 50105), (28094, 45550), (31925, 40084)]