81477960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{557}}^1$

素因数の和:647

約数の個数: 128

約数和(自身を含む): 260340480

約数和(自身を除く): 178862520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 53, 60, 69, 92, 106, 115, 120, 138, 159, 184, 212, 230, 265, 276, 318, 345, 424, 460, 530, 552, 557, 636, 690, 795, 920, 1060, 1114, 1219, 1272, 1380, 1590, 1671, 2120, 2228, 2438, 2760, 2785, 3180, 3342, 3657, 4456, 4876, 5570, 6095, 6360, 6684, 7314, 8355, 9752, 11140, 12190, 12811, 13368, 14628, 16710, 18285, 22280, 24380, 25622, 29256, 29521, 33420, 36570, 38433, 48760, 51244, 59042, 64055, 66840, 73140, 76866, 88563, 102488, 118084, 128110, 146280, 147605, 153732, 177126, 192165, 236168, 256220, 295210, 307464, 354252, 384330, 442815, 512440, 590420, 678983, 708504, 768660, 885630, 1180840, 1357966, 1537320, 1771260, 2036949, 2715932, 3394915, 3542520, 4073898, 5431864, 6789830, 8147796, 10184745, 13579660, 16295592, 20369490, 27159320, 40738980, 81477960]

約数ペア:

[(1, 81477960), (2, 40738980), (3, 27159320), (4, 20369490), (5, 16295592), (6, 13579660), (8, 10184745), (10, 8147796), (12, 6789830), (15, 5431864), (20, 4073898), (23, 3542520), (24, 3394915), (30, 2715932), (40, 2036949), (46, 1771260), (53, 1537320), (60, 1357966), (69, 1180840), (92, 885630), (106, 768660), (115, 708504), (120, 678983), (138, 590420), (159, 512440), (184, 442815), (212, 384330), (230, 354252), (265, 307464), (276, 295210), (318, 256220), (345, 236168), (424, 192165), (460, 177126), (530, 153732), (552, 147605), (557, 146280), (636, 128110), (690, 118084), (795, 102488), (920, 88563), (1060, 76866), (1114, 73140), (1219, 66840), (1272, 64055), (1380, 59042), (1590, 51244), (1671, 48760), (2120, 38433), (2228, 36570), (2438, 33420), (2760, 29521), (2785, 29256), (3180, 25622), (3342, 24380), (3657, 22280), (4456, 18285), (4876, 16710), (5570, 14628), (6095, 13368), (6360, 12811), (6684, 12190), (7314, 11140), (8355, 9752)]