205000960

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9421}}^1$

素因数の和:9459

約数の個数: 72

約数和(自身を含む): 519981336

約数和(自身を除く): 314980376

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1360, 2176, 2720, 4352, 5440, 9421, 10880, 18842, 21760, 37684, 47105, 75368, 94210, 150736, 160157, 188420, 301472, 320314, 376840, 602944, 640628, 753680, 800785, 1205888, 1281256, 1507360, 1601570, 2411776, 2562512, 3014720, 3203140, 5125024, 6029440, 6406280, 10250048, 12058880, 12812560, 20500096, 25625120, 41000192, 51250240, 102500480, 205000960]

約数ペア:

[(1, 205000960), (2, 102500480), (4, 51250240), (5, 41000192), (8, 25625120), (10, 20500096), (16, 12812560), (17, 12058880), (20, 10250048), (32, 6406280), (34, 6029440), (40, 5125024), (64, 3203140), (68, 3014720), (80, 2562512), (85, 2411776), (128, 1601570), (136, 1507360), (160, 1281256), (170, 1205888), (256, 800785), (272, 753680), (320, 640628), (340, 602944), (544, 376840), (640, 320314), (680, 301472), (1088, 188420), (1280, 160157), (1360, 150736), (2176, 94210), (2720, 75368), (4352, 47105), (5440, 37684), (9421, 21760), (10880, 18842)]