18278780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{307}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 41653920

約数和(自身を除く): 23375140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 229, 260, 307, 458, 614, 916, 1145, 1228, 1535, 2290, 2977, 3070, 3991, 4580, 5954, 6140, 7982, 11908, 14885, 15964, 19955, 29770, 39910, 59540, 70303, 79820, 140606, 281212, 351515, 703030, 913939, 1406060, 1827878, 3655756, 4569695, 9139390, 18278780]

約数ペア:

[(1, 18278780), (2, 9139390), (4, 4569695), (5, 3655756), (10, 1827878), (13, 1406060), (20, 913939), (26, 703030), (52, 351515), (65, 281212), (130, 140606), (229, 79820), (260, 70303), (307, 59540), (458, 39910), (614, 29770), (916, 19955), (1145, 15964), (1228, 14885), (1535, 11908), (2290, 7982), (2977, 6140), (3070, 5954), (3991, 4580)]