19721988

素因数分解:

$2^2\times 3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1277}}^1$

素因数の和:1314

約数の個数: 96

約数和(自身を含む): 60117120

約数和(自身を除く): 40395132

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 13, 18, 22, 26, 27, 33, 36, 39, 44, 52, 54, 66, 78, 99, 108, 117, 132, 143, 156, 198, 234, 286, 297, 351, 396, 429, 468, 572, 594, 702, 858, 1188, 1277, 1287, 1404, 1716, 2554, 2574, 3831, 3861, 5108, 5148, 7662, 7722, 11493, 14047, 15324, 15444, 16601, 22986, 28094, 33202, 34479, 42141, 45972, 49803, 56188, 66404, 68958, 84282, 99606, 126423, 137916, 149409, 168564, 182611, 199212, 252846, 298818, 365222, 379269, 448227, 505692, 547833, 597636, 730444, 758538, 896454, 1095666, 1517076, 1643499, 1792908, 2191332, 3286998, 4930497, 6573996, 9860994, 19721988]

約数ペア:

[(1, 19721988), (2, 9860994), (3, 6573996), (4, 4930497), (6, 3286998), (9, 2191332), (11, 1792908), (12, 1643499), (13, 1517076), (18, 1095666), (22, 896454), (26, 758538), (27, 730444), (33, 597636), (36, 547833), (39, 505692), (44, 448227), (52, 379269), (54, 365222), (66, 298818), (78, 252846), (99, 199212), (108, 182611), (117, 168564), (132, 149409), (143, 137916), (156, 126423), (198, 99606), (234, 84282), (286, 68958), (297, 66404), (351, 56188), (396, 49803), (429, 45972), (468, 42141), (572, 34479), (594, 33202), (702, 28094), (858, 22986), (1188, 16601), (1277, 15444), (1287, 15324), (1404, 14047), (1716, 11493), (2554, 7722), (2574, 7662), (3831, 5148), (3861, 5108)]