20955420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2477}}^1$

素因数の和:2539

約数の個数: 72

約数和(自身を含む): 64943424

約数和(自身を除く): 43988004

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 60, 90, 94, 141, 180, 188, 235, 282, 423, 470, 564, 705, 846, 940, 1410, 1692, 2115, 2477, 2820, 4230, 4954, 7431, 8460, 9908, 12385, 14862, 22293, 24770, 29724, 37155, 44586, 49540, 74310, 89172, 111465, 116419, 148620, 222930, 232838, 349257, 445860, 465676, 582095, 698514, 1047771, 1164190, 1397028, 1746285, 2095542, 2328380, 3492570, 4191084, 5238855, 6985140, 10477710, 20955420]

約数ペア:

[(1, 20955420), (2, 10477710), (3, 6985140), (4, 5238855), (5, 4191084), (6, 3492570), (9, 2328380), (10, 2095542), (12, 1746285), (15, 1397028), (18, 1164190), (20, 1047771), (30, 698514), (36, 582095), (45, 465676), (47, 445860), (60, 349257), (90, 232838), (94, 222930), (141, 148620), (180, 116419), (188, 111465), (235, 89172), (282, 74310), (423, 49540), (470, 44586), (564, 37155), (705, 29724), (846, 24770), (940, 22293), (1410, 14862), (1692, 12385), (2115, 9908), (2477, 8460), (2820, 7431), (4230, 4954)]