1440140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 3386880

約数和(自身を除く): 1946740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 191, 260, 290, 377, 382, 580, 754, 764, 955, 1508, 1885, 1910, 2483, 3770, 3820, 4966, 5539, 7540, 9932, 11078, 12415, 22156, 24830, 27695, 49660, 55390, 72007, 110780, 144014, 288028, 360035, 720070, 1440140]

約数ペア:

[(1, 1440140), (2, 720070), (4, 360035), (5, 288028), (10, 144014), (13, 110780), (20, 72007), (26, 55390), (29, 49660), (52, 27695), (58, 24830), (65, 22156), (116, 12415), (130, 11078), (145, 9932), (191, 7540), (260, 5539), (290, 4966), (377, 3820), (382, 3770), (580, 2483), (754, 1910), (764, 1885), (955, 1508)]