81261620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:273

約数の個数: 96

約数和(自身を含む): 195350400

約数和(自身を除く): 114088780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 67, 74, 110, 134, 148, 149, 185, 220, 268, 298, 335, 370, 407, 596, 670, 737, 740, 745, 814, 1340, 1474, 1490, 1628, 1639, 2035, 2479, 2948, 2980, 3278, 3685, 4070, 4958, 5513, 6556, 7370, 8140, 8195, 9916, 9983, 11026, 12395, 14740, 16390, 19966, 22052, 24790, 27269, 27565, 32780, 39932, 49580, 49915, 54538, 55130, 60643, 99830, 109076, 109813, 110260, 121286, 136345, 199660, 219626, 242572, 272690, 303215, 369371, 439252, 545380, 549065, 606430, 738742, 1098130, 1212860, 1477484, 1846855, 2196260, 3693710, 4063081, 7387420, 8126162, 16252324, 20315405, 40630810, 81261620]

約数ペア:

[(1, 81261620), (2, 40630810), (4, 20315405), (5, 16252324), (10, 8126162), (11, 7387420), (20, 4063081), (22, 3693710), (37, 2196260), (44, 1846855), (55, 1477484), (67, 1212860), (74, 1098130), (110, 738742), (134, 606430), (148, 549065), (149, 545380), (185, 439252), (220, 369371), (268, 303215), (298, 272690), (335, 242572), (370, 219626), (407, 199660), (596, 136345), (670, 121286), (737, 110260), (740, 109813), (745, 109076), (814, 99830), (1340, 60643), (1474, 55130), (1490, 54538), (1628, 49915), (1639, 49580), (2035, 39932), (2479, 32780), (2948, 27565), (2980, 27269), (3278, 24790), (3685, 22052), (4070, 19966), (4958, 16390), (5513, 14740), (6556, 12395), (7370, 11026), (8140, 9983), (8195, 9916)]