81357440

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5527}}^1$

素因数の和:5569

約数の個数: 64

約数和(自身を含む): 202988160

約数和(自身を除く): 121630720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1472, 1840, 2944, 3680, 5527, 7360, 11054, 14720, 22108, 27635, 44216, 55270, 88432, 110540, 127121, 176864, 221080, 254242, 353728, 442160, 508484, 635605, 707456, 884320, 1016968, 1271210, 1768640, 2033936, 2542420, 3537280, 4067872, 5084840, 8135744, 10169680, 16271488, 20339360, 40678720, 81357440]

約数ペア:

[(1, 81357440), (2, 40678720), (4, 20339360), (5, 16271488), (8, 10169680), (10, 8135744), (16, 5084840), (20, 4067872), (23, 3537280), (32, 2542420), (40, 2033936), (46, 1768640), (64, 1271210), (80, 1016968), (92, 884320), (115, 707456), (128, 635605), (160, 508484), (184, 442160), (230, 353728), (320, 254242), (368, 221080), (460, 176864), (640, 127121), (736, 110540), (920, 88432), (1472, 55270), (1840, 44216), (2944, 27635), (3680, 22108), (5527, 14720), (7360, 11054)]