21636212

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 22110988

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 61, 76, 122, 244, 247, 359, 494, 718, 793, 988, 1159, 1436, 1586, 2318, 3172, 4636, 4667, 6821, 9334, 13642, 15067, 18668, 21899, 27284, 30134, 43798, 60268, 87596, 88673, 177346, 284687, 354692, 416081, 569374, 832162, 1138748, 1664324, 5409053, 10818106, 21636212]

約数ペア:

[(1, 21636212), (2, 10818106), (4, 5409053), (13, 1664324), (19, 1138748), (26, 832162), (38, 569374), (52, 416081), (61, 354692), (76, 284687), (122, 177346), (244, 88673), (247, 87596), (359, 60268), (494, 43798), (718, 30134), (793, 27284), (988, 21899), (1159, 18668), (1436, 15067), (1586, 13642), (2318, 9334), (3172, 6821), (4636, 4667)]