19980480

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1601}}^1$

素因数の和:1634

約数の個数: 112

約数和(自身を含む): 68360544

約数和(自身を除く): 48380064

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 960, 1040, 1248, 1560, 1601, 2080, 2496, 3120, 3202, 4160, 4803, 6240, 6404, 8005, 9606, 12480, 12808, 16010, 19212, 20813, 24015, 25616, 32020, 38424, 41626, 48030, 51232, 62439, 64040, 76848, 83252, 96060, 102464, 104065, 124878, 128080, 153696, 166504, 192120, 208130, 249756, 256160, 307392, 312195, 333008, 384240, 416260, 499512, 512320, 624390, 666016, 768480, 832520, 999024, 1248780, 1332032, 1536960, 1665040, 1998048, 2497560, 3330080, 3996096, 4995120, 6660160, 9990240, 19980480]

約数ペア:

[(1, 19980480), (2, 9990240), (3, 6660160), (4, 4995120), (5, 3996096), (6, 3330080), (8, 2497560), (10, 1998048), (12, 1665040), (13, 1536960), (15, 1332032), (16, 1248780), (20, 999024), (24, 832520), (26, 768480), (30, 666016), (32, 624390), (39, 512320), (40, 499512), (48, 416260), (52, 384240), (60, 333008), (64, 312195), (65, 307392), (78, 256160), (80, 249756), (96, 208130), (104, 192120), (120, 166504), (130, 153696), (156, 128080), (160, 124878), (192, 104065), (195, 102464), (208, 96060), (240, 83252), (260, 76848), (312, 64040), (320, 62439), (390, 51232), (416, 48030), (480, 41626), (520, 38424), (624, 32020), (780, 25616), (832, 24015), (960, 20813), (1040, 19212), (1248, 16010), (1560, 12808), (1601, 12480), (2080, 9606), (2496, 8005), (3120, 6404), (3202, 6240), (4160, 4803)]