128138520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2731}}^1$

素因数の和:2785

約数の個数: 128

約数和(自身を含む): 424880640

約数和(自身を除く): 296742120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 23, 24, 30, 34, 40, 46, 51, 60, 68, 69, 85, 92, 102, 115, 120, 136, 138, 170, 184, 204, 230, 255, 276, 340, 345, 391, 408, 460, 510, 552, 680, 690, 782, 920, 1020, 1173, 1380, 1564, 1955, 2040, 2346, 2731, 2760, 3128, 3910, 4692, 5462, 5865, 7820, 8193, 9384, 10924, 11730, 13655, 15640, 16386, 21848, 23460, 27310, 32772, 40965, 46427, 46920, 54620, 62813, 65544, 81930, 92854, 109240, 125626, 139281, 163860, 185708, 188439, 232135, 251252, 278562, 314065, 327720, 371416, 376878, 464270, 502504, 557124, 628130, 696405, 753756, 928540, 942195, 1067821, 1114248, 1256260, 1392810, 1507512, 1857080, 1884390, 2135642, 2512520, 2785620, 3203463, 3768780, 4271284, 5339105, 5571240, 6406926, 7537560, 8542568, 10678210, 12813852, 16017315, 21356420, 25627704, 32034630, 42712840, 64069260, 128138520]

約数ペア:

[(1, 128138520), (2, 64069260), (3, 42712840), (4, 32034630), (5, 25627704), (6, 21356420), (8, 16017315), (10, 12813852), (12, 10678210), (15, 8542568), (17, 7537560), (20, 6406926), (23, 5571240), (24, 5339105), (30, 4271284), (34, 3768780), (40, 3203463), (46, 2785620), (51, 2512520), (60, 2135642), (68, 1884390), (69, 1857080), (85, 1507512), (92, 1392810), (102, 1256260), (115, 1114248), (120, 1067821), (136, 942195), (138, 928540), (170, 753756), (184, 696405), (204, 628130), (230, 557124), (255, 502504), (276, 464270), (340, 376878), (345, 371416), (391, 327720), (408, 314065), (460, 278562), (510, 251252), (552, 232135), (680, 188439), (690, 185708), (782, 163860), (920, 139281), (1020, 125626), (1173, 109240), (1380, 92854), (1564, 81930), (1955, 65544), (2040, 62813), (2346, 54620), (2731, 46920), (2760, 46427), (3128, 40965), (3910, 32772), (4692, 27310), (5462, 23460), (5865, 21848), (7820, 16386), (8193, 15640), (9384, 13655), (10924, 11730)]