81025320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{947}}^1$

素因数の和:1015

約数の個数: 128

約数和(自身を含む): 262103040

約数和(自身を除く): 181077720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 31, 40, 46, 60, 62, 69, 92, 93, 115, 120, 124, 138, 155, 184, 186, 230, 248, 276, 310, 345, 372, 460, 465, 552, 620, 690, 713, 744, 920, 930, 947, 1240, 1380, 1426, 1860, 1894, 2139, 2760, 2841, 2852, 3565, 3720, 3788, 4278, 4735, 5682, 5704, 7130, 7576, 8556, 9470, 10695, 11364, 14205, 14260, 17112, 18940, 21390, 21781, 22728, 28410, 28520, 29357, 37880, 42780, 43562, 56820, 58714, 65343, 85560, 87124, 88071, 108905, 113640, 117428, 130686, 146785, 174248, 176142, 217810, 234856, 261372, 293570, 326715, 352284, 435620, 440355, 522744, 587140, 653430, 675211, 704568, 871240, 880710, 1174280, 1306860, 1350422, 1761420, 2025633, 2613720, 2700844, 3376055, 3522840, 4051266, 5401688, 6752110, 8102532, 10128165, 13504220, 16205064, 20256330, 27008440, 40512660, 81025320]

約数ペア:

[(1, 81025320), (2, 40512660), (3, 27008440), (4, 20256330), (5, 16205064), (6, 13504220), (8, 10128165), (10, 8102532), (12, 6752110), (15, 5401688), (20, 4051266), (23, 3522840), (24, 3376055), (30, 2700844), (31, 2613720), (40, 2025633), (46, 1761420), (60, 1350422), (62, 1306860), (69, 1174280), (92, 880710), (93, 871240), (115, 704568), (120, 675211), (124, 653430), (138, 587140), (155, 522744), (184, 440355), (186, 435620), (230, 352284), (248, 326715), (276, 293570), (310, 261372), (345, 234856), (372, 217810), (460, 176142), (465, 174248), (552, 146785), (620, 130686), (690, 117428), (713, 113640), (744, 108905), (920, 88071), (930, 87124), (947, 85560), (1240, 65343), (1380, 58714), (1426, 56820), (1860, 43562), (1894, 42780), (2139, 37880), (2760, 29357), (2841, 28520), (2852, 28410), (3565, 22728), (3720, 21781), (3788, 21390), (4278, 18940), (4735, 17112), (5682, 14260), (5704, 14205), (7130, 11364), (7576, 10695), (8556, 9470)]