20292400

素因数分解:

$2^4\times 5^2\times {\mathrm{97}}^1\times {\mathrm{523}}^1$

素因数の和:638

約数の個数: 60

約数和(自身を含む): 49349272

約数和(自身を除く): 29056872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 97, 100, 194, 200, 388, 400, 485, 523, 776, 970, 1046, 1552, 1940, 2092, 2425, 2615, 3880, 4184, 4850, 5230, 7760, 8368, 9700, 10460, 13075, 19400, 20920, 26150, 38800, 41840, 50731, 52300, 101462, 104600, 202924, 209200, 253655, 405848, 507310, 811696, 1014620, 1268275, 2029240, 2536550, 4058480, 5073100, 10146200, 20292400]

約数ペア:

[(1, 20292400), (2, 10146200), (4, 5073100), (5, 4058480), (8, 2536550), (10, 2029240), (16, 1268275), (20, 1014620), (25, 811696), (40, 507310), (50, 405848), (80, 253655), (97, 209200), (100, 202924), (194, 104600), (200, 101462), (388, 52300), (400, 50731), (485, 41840), (523, 38800), (776, 26150), (970, 20920), (1046, 19400), (1552, 13075), (1940, 10460), (2092, 9700), (2425, 8368), (2615, 7760), (3880, 5230), (4184, 4850)]