80019940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1$

素因数の和:618

約数の個数: 144

約数和(自身を含む): 230053824

約数和(自身を除く): 150033884

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 49, 52, 55, 65, 70, 77, 91, 98, 110, 130, 140, 143, 154, 182, 196, 220, 245, 260, 286, 308, 364, 385, 455, 490, 539, 571, 572, 637, 715, 770, 910, 980, 1001, 1078, 1142, 1274, 1430, 1540, 1820, 2002, 2156, 2284, 2548, 2695, 2855, 2860, 3185, 3997, 4004, 5005, 5390, 5710, 6281, 6370, 7007, 7423, 7994, 10010, 10780, 11420, 12562, 12740, 14014, 14846, 15988, 19985, 20020, 25124, 27979, 28028, 29692, 31405, 35035, 37115, 39970, 43967, 51961, 55958, 62810, 70070, 74230, 79940, 81653, 87934, 103922, 111916, 125620, 139895, 140140, 148460, 163306, 175868, 207844, 219835, 259805, 279790, 307769, 326612, 363727, 408265, 439670, 519610, 559580, 571571, 615538, 727454, 816530, 879340, 1039220, 1143142, 1231076, 1454908, 1538845, 1633060, 1818635, 2286284, 2857855, 3077690, 3637270, 4000997, 5715710, 6155380, 7274540, 8001994, 11431420, 16003988, 20004985, 40009970, 80019940]

約数ペア:

[(1, 80019940), (2, 40009970), (4, 20004985), (5, 16003988), (7, 11431420), (10, 8001994), (11, 7274540), (13, 6155380), (14, 5715710), (20, 4000997), (22, 3637270), (26, 3077690), (28, 2857855), (35, 2286284), (44, 1818635), (49, 1633060), (52, 1538845), (55, 1454908), (65, 1231076), (70, 1143142), (77, 1039220), (91, 879340), (98, 816530), (110, 727454), (130, 615538), (140, 571571), (143, 559580), (154, 519610), (182, 439670), (196, 408265), (220, 363727), (245, 326612), (260, 307769), (286, 279790), (308, 259805), (364, 219835), (385, 207844), (455, 175868), (490, 163306), (539, 148460), (571, 140140), (572, 139895), (637, 125620), (715, 111916), (770, 103922), (910, 87934), (980, 81653), (1001, 79940), (1078, 74230), (1142, 70070), (1274, 62810), (1430, 55958), (1540, 51961), (1820, 43967), (2002, 39970), (2156, 37115), (2284, 35035), (2548, 31405), (2695, 29692), (2855, 28028), (2860, 27979), (3185, 25124), (3997, 20020), (4004, 19985), (5005, 15988), (5390, 14846), (5710, 14014), (6281, 12740), (6370, 12562), (7007, 11420), (7423, 10780), (7994, 10010)]