20448008

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{457}}^1$

素因数の和:534

約数の個数: 64

約数和(自身を含む): 47485440

約数和(自身を除く): 27037432

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 47, 56, 68, 94, 119, 136, 188, 238, 329, 376, 457, 476, 658, 799, 914, 952, 1316, 1598, 1828, 2632, 3196, 3199, 3656, 5593, 6392, 6398, 7769, 11186, 12796, 15538, 21479, 22372, 25592, 31076, 42958, 44744, 54383, 62152, 85916, 108766, 150353, 171832, 217532, 300706, 365143, 435064, 601412, 730286, 1202824, 1460572, 2556001, 2921144, 5112002, 10224004, 20448008]

約数ペア:

[(1, 20448008), (2, 10224004), (4, 5112002), (7, 2921144), (8, 2556001), (14, 1460572), (17, 1202824), (28, 730286), (34, 601412), (47, 435064), (56, 365143), (68, 300706), (94, 217532), (119, 171832), (136, 150353), (188, 108766), (238, 85916), (329, 62152), (376, 54383), (457, 44744), (476, 42958), (658, 31076), (799, 25592), (914, 22372), (952, 21479), (1316, 15538), (1598, 12796), (1828, 11186), (2632, 7769), (3196, 6398), (3199, 6392), (3656, 5593)]