19971120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:239

約数の個数: 160

約数和(自身を含む): 68870592

約数和(自身を除く): 48899472

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 37, 39, 40, 48, 52, 60, 65, 74, 78, 80, 104, 111, 120, 130, 148, 156, 173, 185, 195, 208, 222, 240, 260, 296, 312, 346, 370, 390, 444, 481, 519, 520, 555, 592, 624, 692, 740, 780, 865, 888, 962, 1038, 1040, 1110, 1384, 1443, 1480, 1560, 1730, 1776, 1924, 2076, 2220, 2249, 2405, 2595, 2768, 2886, 2960, 3120, 3460, 3848, 4152, 4440, 4498, 4810, 5190, 5772, 6401, 6747, 6920, 7215, 7696, 8304, 8880, 8996, 9620, 10380, 11245, 11544, 12802, 13494, 13840, 14430, 17992, 19203, 19240, 20760, 22490, 23088, 25604, 26988, 28860, 32005, 33735, 35984, 38406, 38480, 41520, 44980, 51208, 53976, 57720, 64010, 67470, 76812, 83213, 89960, 96015, 102416, 107952, 115440, 128020, 134940, 153624, 166426, 179920, 192030, 249639, 256040, 269880, 307248, 332852, 384060, 416065, 499278, 512080, 539760, 665704, 768120, 832130, 998556, 1248195, 1331408, 1536240, 1664260, 1997112, 2496390, 3328520, 3994224, 4992780, 6657040, 9985560, 19971120]

約数ペア:

[(1, 19971120), (2, 9985560), (3, 6657040), (4, 4992780), (5, 3994224), (6, 3328520), (8, 2496390), (10, 1997112), (12, 1664260), (13, 1536240), (15, 1331408), (16, 1248195), (20, 998556), (24, 832130), (26, 768120), (30, 665704), (37, 539760), (39, 512080), (40, 499278), (48, 416065), (52, 384060), (60, 332852), (65, 307248), (74, 269880), (78, 256040), (80, 249639), (104, 192030), (111, 179920), (120, 166426), (130, 153624), (148, 134940), (156, 128020), (173, 115440), (185, 107952), (195, 102416), (208, 96015), (222, 89960), (240, 83213), (260, 76812), (296, 67470), (312, 64010), (346, 57720), (370, 53976), (390, 51208), (444, 44980), (481, 41520), (519, 38480), (520, 38406), (555, 35984), (592, 33735), (624, 32005), (692, 28860), (740, 26988), (780, 25604), (865, 23088), (888, 22490), (962, 20760), (1038, 19240), (1040, 19203), (1110, 17992), (1384, 14430), (1443, 13840), (1480, 13494), (1560, 12802), (1730, 11544), (1776, 11245), (1924, 10380), (2076, 9620), (2220, 8996), (2249, 8880), (2405, 8304), (2595, 7696), (2768, 7215), (2886, 6920), (2960, 6747), (3120, 6401), (3460, 5772), (3848, 5190), (4152, 4810), (4440, 4498)]