71980020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{8161}}^1$

素因数の和:8190

約数の個数: 108

約数和(自身を含む): 254017764

約数和(自身を除く): 182037744

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 4410, 8161, 8820, 16322, 24483, 32644, 40805, 48966, 57127, 73449, 81610, 97932, 114254, 122415, 146898, 163220, 171381, 228508, 244830, 285635, 293796, 342762, 367245, 399889, 489660, 514143, 571270, 685524, 734490, 799778, 856905, 1028286, 1142540, 1199667, 1468980, 1599556, 1713810, 1999445, 2056572, 2399334, 2570715, 3427620, 3599001, 3998890, 4798668, 5141430, 5998335, 7198002, 7997780, 10282860, 11996670, 14396004, 17995005, 23993340, 35990010, 71980020]

約数ペア:

[(1, 71980020), (2, 35990010), (3, 23993340), (4, 17995005), (5, 14396004), (6, 11996670), (7, 10282860), (9, 7997780), (10, 7198002), (12, 5998335), (14, 5141430), (15, 4798668), (18, 3998890), (20, 3599001), (21, 3427620), (28, 2570715), (30, 2399334), (35, 2056572), (36, 1999445), (42, 1713810), (45, 1599556), (49, 1468980), (60, 1199667), (63, 1142540), (70, 1028286), (84, 856905), (90, 799778), (98, 734490), (105, 685524), (126, 571270), (140, 514143), (147, 489660), (180, 399889), (196, 367245), (210, 342762), (245, 293796), (252, 285635), (294, 244830), (315, 228508), (420, 171381), (441, 163220), (490, 146898), (588, 122415), (630, 114254), (735, 97932), (882, 81610), (980, 73449), (1260, 57127), (1470, 48966), (1764, 40805), (2205, 32644), (2940, 24483), (4410, 16322), (8161, 8820)]