17970975

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 36037872

約数和(自身を除く): 18066897

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 53, 55, 75, 99, 137, 159, 165, 225, 265, 275, 411, 477, 495, 583, 685, 795, 825, 1233, 1325, 1507, 1749, 2055, 2385, 2475, 2915, 3425, 3975, 4521, 5247, 6165, 7261, 7535, 8745, 10275, 11925, 13563, 14575, 21783, 22605, 26235, 30825, 36305, 37675, 43725, 65349, 67815, 79871, 108915, 113025, 131175, 181525, 239613, 326745, 339075, 399355, 544575, 718839, 1198065, 1633725, 1996775, 3594195, 5990325, 17970975]

約数ペア:

[(1, 17970975), (3, 5990325), (5, 3594195), (9, 1996775), (11, 1633725), (15, 1198065), (25, 718839), (33, 544575), (45, 399355), (53, 339075), (55, 326745), (75, 239613), (99, 181525), (137, 131175), (159, 113025), (165, 108915), (225, 79871), (265, 67815), (275, 65349), (411, 43725), (477, 37675), (495, 36305), (583, 30825), (685, 26235), (795, 22605), (825, 21783), (1233, 14575), (1325, 13563), (1507, 11925), (1749, 10275), (2055, 8745), (2385, 7535), (2475, 7261), (2915, 6165), (3425, 5247), (3975, 4521)]