81684540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{269}}^1$

素因数の和:532

約数の個数: 144

約数和(自身を含む): 285405120

約数和(自身を除く): 203720580

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 241, 252, 269, 315, 420, 482, 538, 630, 723, 807, 964, 1076, 1205, 1260, 1345, 1446, 1614, 1687, 1883, 2169, 2410, 2421, 2690, 2892, 3228, 3374, 3615, 3766, 4035, 4338, 4820, 4842, 5061, 5380, 5649, 6748, 7230, 7532, 8070, 8435, 8676, 9415, 9684, 10122, 10845, 11298, 12105, 14460, 15183, 16140, 16870, 16947, 18830, 20244, 21690, 22596, 24210, 25305, 28245, 30366, 33740, 33894, 37660, 43380, 48420, 50610, 56490, 60732, 64829, 67788, 75915, 84735, 101220, 112980, 129658, 151830, 169470, 194487, 259316, 303660, 324145, 338940, 388974, 453803, 583461, 648290, 777948, 907606, 972435, 1166922, 1296580, 1361409, 1815212, 1944870, 2269015, 2333844, 2722818, 2917305, 3889740, 4084227, 4538030, 5445636, 5834610, 6807045, 8168454, 9076060, 11669220, 13614090, 16336908, 20421135, 27228180, 40842270, 81684540]

約数ペア:

[(1, 81684540), (2, 40842270), (3, 27228180), (4, 20421135), (5, 16336908), (6, 13614090), (7, 11669220), (9, 9076060), (10, 8168454), (12, 6807045), (14, 5834610), (15, 5445636), (18, 4538030), (20, 4084227), (21, 3889740), (28, 2917305), (30, 2722818), (35, 2333844), (36, 2269015), (42, 1944870), (45, 1815212), (60, 1361409), (63, 1296580), (70, 1166922), (84, 972435), (90, 907606), (105, 777948), (126, 648290), (140, 583461), (180, 453803), (210, 388974), (241, 338940), (252, 324145), (269, 303660), (315, 259316), (420, 194487), (482, 169470), (538, 151830), (630, 129658), (723, 112980), (807, 101220), (964, 84735), (1076, 75915), (1205, 67788), (1260, 64829), (1345, 60732), (1446, 56490), (1614, 50610), (1687, 48420), (1883, 43380), (2169, 37660), (2410, 33894), (2421, 33740), (2690, 30366), (2892, 28245), (3228, 25305), (3374, 24210), (3615, 22596), (3766, 21690), (4035, 20244), (4338, 18830), (4820, 16947), (4842, 16870), (5061, 16140), (5380, 15183), (5649, 14460), (6748, 12105), (7230, 11298), (7532, 10845), (8070, 10122), (8435, 9684), (8676, 9415)]