81637140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:218

約数の個数: 144

約数和(自身を含む): 253084608

約数和(自身を除く): 171447468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 83, 97, 130, 156, 166, 169, 194, 195, 249, 260, 291, 332, 338, 388, 390, 415, 485, 498, 507, 582, 676, 780, 830, 845, 970, 996, 1014, 1079, 1164, 1245, 1261, 1455, 1660, 1690, 1940, 2028, 2158, 2490, 2522, 2535, 2910, 3237, 3380, 3783, 4316, 4980, 5044, 5070, 5395, 5820, 6305, 6474, 7566, 8051, 10140, 10790, 12610, 12948, 14027, 15132, 16102, 16185, 16393, 18915, 21580, 24153, 25220, 28054, 32204, 32370, 32786, 37830, 40255, 42081, 48306, 49179, 56108, 64740, 65572, 70135, 75660, 80510, 81965, 84162, 96612, 98358, 104663, 120765, 140270, 161020, 163930, 168324, 196716, 209326, 210405, 241530, 245895, 280540, 313989, 327860, 418652, 420810, 483060, 491790, 523315, 627978, 841620, 983580, 1046630, 1255956, 1360619, 1569945, 2093260, 2721238, 3139890, 4081857, 5442476, 6279780, 6803095, 8163714, 13606190, 16327428, 20409285, 27212380, 40818570, 81637140]

約数ペア:

[(1, 81637140), (2, 40818570), (3, 27212380), (4, 20409285), (5, 16327428), (6, 13606190), (10, 8163714), (12, 6803095), (13, 6279780), (15, 5442476), (20, 4081857), (26, 3139890), (30, 2721238), (39, 2093260), (52, 1569945), (60, 1360619), (65, 1255956), (78, 1046630), (83, 983580), (97, 841620), (130, 627978), (156, 523315), (166, 491790), (169, 483060), (194, 420810), (195, 418652), (249, 327860), (260, 313989), (291, 280540), (332, 245895), (338, 241530), (388, 210405), (390, 209326), (415, 196716), (485, 168324), (498, 163930), (507, 161020), (582, 140270), (676, 120765), (780, 104663), (830, 98358), (845, 96612), (970, 84162), (996, 81965), (1014, 80510), (1079, 75660), (1164, 70135), (1245, 65572), (1261, 64740), (1455, 56108), (1660, 49179), (1690, 48306), (1940, 42081), (2028, 40255), (2158, 37830), (2490, 32786), (2522, 32370), (2535, 32204), (2910, 28054), (3237, 25220), (3380, 24153), (3783, 21580), (4316, 18915), (4980, 16393), (5044, 16185), (5070, 16102), (5395, 15132), (5820, 14027), (6305, 12948), (6474, 12610), (7566, 10790), (8051, 10140)]