80389920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{991}}^1$

素因数の和:1035

約数の個数: 144

約数和(自身を含む): 274482432

約数和(自身を除く): 194092512

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, 65, 78, 80, 96, 104, 120, 130, 156, 160, 169, 195, 208, 240, 260, 312, 338, 390, 416, 480, 507, 520, 624, 676, 780, 845, 991, 1014, 1040, 1248, 1352, 1560, 1690, 1982, 2028, 2080, 2535, 2704, 2973, 3120, 3380, 3964, 4056, 4955, 5070, 5408, 5946, 6240, 6760, 7928, 8112, 9910, 10140, 11892, 12883, 13520, 14865, 15856, 16224, 19820, 20280, 23784, 25766, 27040, 29730, 31712, 38649, 39640, 40560, 47568, 51532, 59460, 64415, 77298, 79280, 81120, 95136, 103064, 118920, 128830, 154596, 158560, 167479, 193245, 206128, 237840, 257660, 309192, 334958, 386490, 412256, 475680, 502437, 515320, 618384, 669916, 772980, 837395, 1004874, 1030640, 1236768, 1339832, 1545960, 1674790, 2009748, 2061280, 2512185, 2679664, 3091920, 3349580, 4019496, 5024370, 5359328, 6183840, 6699160, 8038992, 10048740, 13398320, 16077984, 20097480, 26796640, 40194960, 80389920]

約数ペア:

[(1, 80389920), (2, 40194960), (3, 26796640), (4, 20097480), (5, 16077984), (6, 13398320), (8, 10048740), (10, 8038992), (12, 6699160), (13, 6183840), (15, 5359328), (16, 5024370), (20, 4019496), (24, 3349580), (26, 3091920), (30, 2679664), (32, 2512185), (39, 2061280), (40, 2009748), (48, 1674790), (52, 1545960), (60, 1339832), (65, 1236768), (78, 1030640), (80, 1004874), (96, 837395), (104, 772980), (120, 669916), (130, 618384), (156, 515320), (160, 502437), (169, 475680), (195, 412256), (208, 386490), (240, 334958), (260, 309192), (312, 257660), (338, 237840), (390, 206128), (416, 193245), (480, 167479), (507, 158560), (520, 154596), (624, 128830), (676, 118920), (780, 103064), (845, 95136), (991, 81120), (1014, 79280), (1040, 77298), (1248, 64415), (1352, 59460), (1560, 51532), (1690, 47568), (1982, 40560), (2028, 39640), (2080, 38649), (2535, 31712), (2704, 29730), (2973, 27040), (3120, 25766), (3380, 23784), (3964, 20280), (4056, 19820), (4955, 16224), (5070, 15856), (5408, 14865), (5946, 13520), (6240, 12883), (6760, 11892), (7928, 10140), (8112, 9910)]