18704972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{617}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 39245472

約数和(自身を除く): 20540500

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 53, 106, 143, 212, 286, 572, 583, 617, 689, 1166, 1234, 1378, 2332, 2468, 2756, 6787, 7579, 8021, 13574, 15158, 16042, 27148, 30316, 32084, 32701, 65402, 88231, 130804, 176462, 352924, 359711, 425113, 719422, 850226, 1438844, 1700452, 4676243, 9352486, 18704972]

約数ペア:

[(1, 18704972), (2, 9352486), (4, 4676243), (11, 1700452), (13, 1438844), (22, 850226), (26, 719422), (44, 425113), (52, 359711), (53, 352924), (106, 176462), (143, 130804), (212, 88231), (286, 65402), (572, 32701), (583, 32084), (617, 30316), (689, 27148), (1166, 16042), (1234, 15158), (1378, 13574), (2332, 8021), (2468, 7579), (2756, 6787)]