18986782365

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{293}}^1\times {\mathrm{3989}}^1$

素因数の和:4331

約数の個数: 72

約数和(自身を含む): 34860997080

約数和(自身を除く): 15874214715

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 293, 361, 855, 879, 1083, 1465, 1805, 2637, 3249, 3989, 4395, 5415, 5567, 11967, 13185, 16245, 16701, 19945, 27835, 35901, 50103, 59835, 75791, 83505, 105773, 179505, 227373, 250515, 317319, 378955, 528865, 682119, 951957, 1136865, 1168777, 1440029, 1586595, 3410595, 3506331, 4320087, 4759785, 5843885, 7200145, 10518993, 12960261, 17531655, 21600435, 22206763, 52594965, 64801305, 66620289, 111033815, 199860867, 333101445, 421928497, 999304335, 1265785491, 2109642485, 3797356473, 6328927455, 18986782365]

約数ペア:

[(1, 18986782365), (3, 6328927455), (5, 3797356473), (9, 2109642485), (15, 1265785491), (19, 999304335), (45, 421928497), (57, 333101445), (95, 199860867), (171, 111033815), (285, 66620289), (293, 64801305), (361, 52594965), (855, 22206763), (879, 21600435), (1083, 17531655), (1465, 12960261), (1805, 10518993), (2637, 7200145), (3249, 5843885), (3989, 4759785), (4395, 4320087), (5415, 3506331), (5567, 3410595), (11967, 1586595), (13185, 1440029), (16245, 1168777), (16701, 1136865), (19945, 951957), (27835, 682119), (35901, 528865), (50103, 378955), (59835, 317319), (75791, 250515), (83505, 227373), (105773, 179505)]