19187980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:199

約数の個数: 96

約数和(自身を含む): 49351680

約数和(自身を除く): 30163700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 59, 70, 92, 101, 115, 118, 140, 161, 202, 230, 236, 295, 322, 404, 413, 460, 505, 590, 644, 707, 805, 826, 1010, 1180, 1357, 1414, 1610, 1652, 2020, 2065, 2323, 2714, 2828, 3220, 3535, 4130, 4646, 5428, 5959, 6785, 7070, 8260, 9292, 9499, 11615, 11918, 13570, 14140, 16261, 18998, 23230, 23836, 27140, 29795, 32522, 37996, 41713, 46460, 47495, 59590, 65044, 81305, 83426, 94990, 119180, 137057, 162610, 166852, 189980, 208565, 274114, 325220, 417130, 548228, 685285, 834260, 959399, 1370570, 1918798, 2741140, 3837596, 4796995, 9593990, 19187980]

約数ペア:

[(1, 19187980), (2, 9593990), (4, 4796995), (5, 3837596), (7, 2741140), (10, 1918798), (14, 1370570), (20, 959399), (23, 834260), (28, 685285), (35, 548228), (46, 417130), (59, 325220), (70, 274114), (92, 208565), (101, 189980), (115, 166852), (118, 162610), (140, 137057), (161, 119180), (202, 94990), (230, 83426), (236, 81305), (295, 65044), (322, 59590), (404, 47495), (413, 46460), (460, 41713), (505, 37996), (590, 32522), (644, 29795), (707, 27140), (805, 23836), (826, 23230), (1010, 18998), (1180, 16261), (1357, 14140), (1414, 13570), (1610, 11918), (1652, 11615), (2020, 9499), (2065, 9292), (2323, 8260), (2714, 7070), (2828, 6785), (3220, 5959), (3535, 5428), (4130, 4646)]