19454955

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 36288000

約数和(自身を除く): 16833045

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 59, 65, 89, 95, 177, 195, 247, 267, 285, 295, 445, 741, 767, 885, 1121, 1157, 1235, 1335, 1691, 2301, 3363, 3471, 3705, 3835, 5073, 5251, 5605, 5785, 8455, 11505, 14573, 15753, 16815, 17355, 21983, 25365, 26255, 43719, 65949, 68263, 72865, 78765, 99769, 109915, 204789, 218595, 299307, 329745, 341315, 498845, 1023945, 1296997, 1496535, 3890991, 6484985, 19454955]

約数ペア:

[(1, 19454955), (3, 6484985), (5, 3890991), (13, 1496535), (15, 1296997), (19, 1023945), (39, 498845), (57, 341315), (59, 329745), (65, 299307), (89, 218595), (95, 204789), (177, 109915), (195, 99769), (247, 78765), (267, 72865), (285, 68263), (295, 65949), (445, 43719), (741, 26255), (767, 25365), (885, 21983), (1121, 17355), (1157, 16815), (1235, 15753), (1335, 14573), (1691, 11505), (2301, 8455), (3363, 5785), (3471, 5605), (3705, 5251), (3835, 5073)]