21221600

素因数分解:

$2^5\times 5^2\times {\mathrm{41}}^1\times {\mathrm{647}}^1$

素因数の和:708

約数の個数: 72

約数和(自身を含む): 53152848

約数和(自身を除く): 31931248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 80, 82, 100, 160, 164, 200, 205, 328, 400, 410, 647, 656, 800, 820, 1025, 1294, 1312, 1640, 2050, 2588, 3235, 3280, 4100, 5176, 6470, 6560, 8200, 10352, 12940, 16175, 16400, 20704, 25880, 26527, 32350, 32800, 51760, 53054, 64700, 103520, 106108, 129400, 132635, 212216, 258800, 265270, 424432, 517600, 530540, 663175, 848864, 1061080, 1326350, 2122160, 2652700, 4244320, 5305400, 10610800, 21221600]

約数ペア:

[(1, 21221600), (2, 10610800), (4, 5305400), (5, 4244320), (8, 2652700), (10, 2122160), (16, 1326350), (20, 1061080), (25, 848864), (32, 663175), (40, 530540), (41, 517600), (50, 424432), (80, 265270), (82, 258800), (100, 212216), (160, 132635), (164, 129400), (200, 106108), (205, 103520), (328, 64700), (400, 53054), (410, 51760), (647, 32800), (656, 32350), (800, 26527), (820, 25880), (1025, 20704), (1294, 16400), (1312, 16175), (1640, 12940), (2050, 10352), (2588, 8200), (3235, 6560), (3280, 6470), (4100, 5176)]