19748025

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 39461760

約数和(自身を除く): 19713735

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 79, 99, 101, 165, 225, 237, 275, 303, 395, 495, 505, 711, 825, 869, 909, 1111, 1185, 1515, 1975, 2475, 2525, 2607, 3333, 3555, 4345, 4545, 5555, 5925, 7575, 7821, 7979, 9999, 13035, 16665, 17775, 21725, 22725, 23937, 27775, 39105, 39895, 49995, 65175, 71811, 83325, 87769, 119685, 195525, 199475, 249975, 263307, 359055, 438845, 598425, 789921, 1316535, 1795275, 2194225, 3949605, 6582675, 19748025]

約数ペア:

[(1, 19748025), (3, 6582675), (5, 3949605), (9, 2194225), (11, 1795275), (15, 1316535), (25, 789921), (33, 598425), (45, 438845), (55, 359055), (75, 263307), (79, 249975), (99, 199475), (101, 195525), (165, 119685), (225, 87769), (237, 83325), (275, 71811), (303, 65175), (395, 49995), (495, 39895), (505, 39105), (711, 27775), (825, 23937), (869, 22725), (909, 21725), (1111, 17775), (1185, 16665), (1515, 13035), (1975, 9999), (2475, 7979), (2525, 7821), (2607, 7575), (3333, 5925), (3555, 5555), (4345, 4545)]