19802055

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 39674880

約数和(自身を除く): 19872825

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 89, 91, 105, 163, 195, 267, 273, 445, 455, 489, 623, 815, 1141, 1157, 1335, 1365, 1869, 2119, 2445, 3115, 3423, 3471, 5705, 5785, 6357, 8099, 9345, 10595, 14507, 14833, 17115, 17355, 24297, 31785, 40495, 43521, 44499, 72535, 74165, 101549, 121485, 188591, 217605, 222495, 304647, 507745, 565773, 942955, 1320137, 1523235, 2828865, 3960411, 6600685, 19802055]

約数ペア:

[(1, 19802055), (3, 6600685), (5, 3960411), (7, 2828865), (13, 1523235), (15, 1320137), (21, 942955), (35, 565773), (39, 507745), (65, 304647), (89, 222495), (91, 217605), (105, 188591), (163, 121485), (195, 101549), (267, 74165), (273, 72535), (445, 44499), (455, 43521), (489, 40495), (623, 31785), (815, 24297), (1141, 17355), (1157, 17115), (1335, 14833), (1365, 14507), (1869, 10595), (2119, 9345), (2445, 8099), (3115, 6357), (3423, 5785), (3471, 5705)]