20930988

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{10321}}^1$

素因数の和:10354

約数の個数: 36

約数和(自身を含む): 52889928

約数和(自身を除く): 31958940

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 1014, 2028, 10321, 20642, 30963, 41284, 61926, 123852, 134173, 268346, 402519, 536692, 805038, 1610076, 1744249, 3488498, 5232747, 6976996, 10465494, 20930988]

約数ペア:

[(1, 20930988), (2, 10465494), (3, 6976996), (4, 5232747), (6, 3488498), (12, 1744249), (13, 1610076), (26, 805038), (39, 536692), (52, 402519), (78, 268346), (156, 134173), (169, 123852), (338, 61926), (507, 41284), (676, 30963), (1014, 20642), (2028, 10321)]