21274604

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{353}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 43018080

約数和(自身を除く): 21743476

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 61, 76, 122, 244, 247, 353, 494, 706, 793, 988, 1159, 1412, 1586, 2318, 3172, 4589, 4636, 6707, 9178, 13414, 15067, 18356, 21533, 26828, 30134, 43066, 60268, 86132, 87191, 174382, 279929, 348764, 409127, 559858, 818254, 1119716, 1636508, 5318651, 10637302, 21274604]

約数ペア:

[(1, 21274604), (2, 10637302), (4, 5318651), (13, 1636508), (19, 1119716), (26, 818254), (38, 559858), (52, 409127), (61, 348764), (76, 279929), (122, 174382), (244, 87191), (247, 86132), (353, 60268), (494, 43066), (706, 30134), (793, 26828), (988, 21533), (1159, 18356), (1412, 15067), (1586, 13414), (2318, 9178), (3172, 6707), (4589, 4636)]