21222800

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{3121}}^1$

素因数の和:3156

約数の個数: 60

約数和(自身を含む): 54004356

約数和(自身を除く): 32781556

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 200, 272, 340, 400, 425, 680, 850, 1360, 1700, 3121, 3400, 6242, 6800, 12484, 15605, 24968, 31210, 49936, 53057, 62420, 78025, 106114, 124840, 156050, 212228, 249680, 265285, 312100, 424456, 530570, 624200, 848912, 1061140, 1248400, 1326425, 2122280, 2652850, 4244560, 5305700, 10611400, 21222800]

約数ペア:

[(1, 21222800), (2, 10611400), (4, 5305700), (5, 4244560), (8, 2652850), (10, 2122280), (16, 1326425), (17, 1248400), (20, 1061140), (25, 848912), (34, 624200), (40, 530570), (50, 424456), (68, 312100), (80, 265285), (85, 249680), (100, 212228), (136, 156050), (170, 124840), (200, 106114), (272, 78025), (340, 62420), (400, 53057), (425, 49936), (680, 31210), (850, 24968), (1360, 15605), (1700, 12484), (3121, 6800), (3400, 6242)]