18835960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:161

約数の個数: 128

約数和(自身を含む): 51710400

約数和(自身を除く): 32874440

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 37, 40, 44, 52, 55, 65, 74, 88, 89, 104, 110, 130, 143, 148, 178, 185, 220, 260, 286, 296, 356, 370, 407, 440, 445, 481, 520, 572, 712, 715, 740, 814, 890, 962, 979, 1144, 1157, 1430, 1480, 1628, 1780, 1924, 1958, 2035, 2314, 2405, 2860, 3256, 3293, 3560, 3848, 3916, 4070, 4628, 4810, 4895, 5291, 5720, 5785, 6586, 7832, 8140, 9256, 9620, 9790, 10582, 11570, 12727, 13172, 16280, 16465, 19240, 19580, 21164, 23140, 25454, 26344, 26455, 32930, 36223, 39160, 42328, 42809, 46280, 50908, 52910, 63635, 65860, 72446, 85618, 101816, 105820, 127270, 131720, 144892, 171236, 181115, 211640, 214045, 254540, 289784, 342472, 362230, 428090, 470899, 509080, 724460, 856180, 941798, 1448920, 1712360, 1883596, 2354495, 3767192, 4708990, 9417980, 18835960]

約数ペア:

[(1, 18835960), (2, 9417980), (4, 4708990), (5, 3767192), (8, 2354495), (10, 1883596), (11, 1712360), (13, 1448920), (20, 941798), (22, 856180), (26, 724460), (37, 509080), (40, 470899), (44, 428090), (52, 362230), (55, 342472), (65, 289784), (74, 254540), (88, 214045), (89, 211640), (104, 181115), (110, 171236), (130, 144892), (143, 131720), (148, 127270), (178, 105820), (185, 101816), (220, 85618), (260, 72446), (286, 65860), (296, 63635), (356, 52910), (370, 50908), (407, 46280), (440, 42809), (445, 42328), (481, 39160), (520, 36223), (572, 32930), (712, 26455), (715, 26344), (740, 25454), (814, 23140), (890, 21164), (962, 19580), (979, 19240), (1144, 16465), (1157, 16280), (1430, 13172), (1480, 12727), (1628, 11570), (1780, 10582), (1924, 9790), (1958, 9620), (2035, 9256), (2314, 8140), (2405, 7832), (2860, 6586), (3256, 5785), (3293, 5720), (3560, 5291), (3848, 4895), (3916, 4810), (4070, 4628)]