1289676800

素因数分解:

$2^{11}\times 5^2\times {\mathrm{25189}}^1$

素因数の和:25221

約数の個数: 72

約数和(自身を含む): 3197744550

約数和(自身を除く): 1908067750

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1024, 1280, 1600, 2048, 2560, 3200, 5120, 6400, 10240, 12800, 25189, 25600, 50378, 51200, 100756, 125945, 201512, 251890, 403024, 503780, 629725, 806048, 1007560, 1259450, 1612096, 2015120, 2518900, 3224192, 4030240, 5037800, 6448384, 8060480, 10075600, 12896768, 16120960, 20151200, 25793536, 32241920, 40302400, 51587072, 64483840, 80604800, 128967680, 161209600, 257935360, 322419200, 644838400, 1289676800]

約数ペア:

[(1, 1289676800), (2, 644838400), (4, 322419200), (5, 257935360), (8, 161209600), (10, 128967680), (16, 80604800), (20, 64483840), (25, 51587072), (32, 40302400), (40, 32241920), (50, 25793536), (64, 20151200), (80, 16120960), (100, 12896768), (128, 10075600), (160, 8060480), (200, 6448384), (256, 5037800), (320, 4030240), (400, 3224192), (512, 2518900), (640, 2015120), (800, 1612096), (1024, 1259450), (1280, 1007560), (1600, 806048), (2048, 629725), (2560, 503780), (3200, 403024), (5120, 251890), (6400, 201512), (10240, 125945), (12800, 100756), (25189, 51200), (25600, 50378)]