81892720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1607}}^1$

素因数の和:1647

約数の個数: 120

約数和(自身を含む): 238672224

約数和(自身を除く): 156779504

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 364, 392, 455, 490, 520, 560, 637, 728, 784, 910, 980, 1040, 1274, 1456, 1607, 1820, 1960, 2548, 3185, 3214, 3640, 3920, 5096, 6370, 6428, 7280, 8035, 10192, 11249, 12740, 12856, 16070, 20891, 22498, 25480, 25712, 32140, 41782, 44996, 50960, 56245, 64280, 78743, 83564, 89992, 104455, 112490, 128560, 146237, 157486, 167128, 179984, 208910, 224980, 292474, 314972, 334256, 393715, 417820, 449960, 584948, 629944, 731185, 787430, 835640, 899920, 1023659, 1169896, 1259888, 1462370, 1574860, 1671280, 2047318, 2339792, 2924740, 3149720, 4094636, 5118295, 5849480, 6299440, 8189272, 10236590, 11698960, 16378544, 20473180, 40946360, 81892720]

約数ペア:

[(1, 81892720), (2, 40946360), (4, 20473180), (5, 16378544), (7, 11698960), (8, 10236590), (10, 8189272), (13, 6299440), (14, 5849480), (16, 5118295), (20, 4094636), (26, 3149720), (28, 2924740), (35, 2339792), (40, 2047318), (49, 1671280), (52, 1574860), (56, 1462370), (65, 1259888), (70, 1169896), (80, 1023659), (91, 899920), (98, 835640), (104, 787430), (112, 731185), (130, 629944), (140, 584948), (182, 449960), (196, 417820), (208, 393715), (245, 334256), (260, 314972), (280, 292474), (364, 224980), (392, 208910), (455, 179984), (490, 167128), (520, 157486), (560, 146237), (637, 128560), (728, 112490), (784, 104455), (910, 89992), (980, 83564), (1040, 78743), (1274, 64280), (1456, 56245), (1607, 50960), (1820, 44996), (1960, 41782), (2548, 32140), (3185, 25712), (3214, 25480), (3640, 22498), (3920, 20891), (5096, 16070), (6370, 12856), (6428, 12740), (7280, 11249), (8035, 10192)]