131805440

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^2$

素因数の和:212

約数の個数: 108

約数和(自身を含む): 343864164

約数和(自身を除く): 212058724

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 89, 104, 128, 130, 160, 178, 208, 256, 260, 320, 356, 416, 445, 520, 640, 712, 832, 890, 1040, 1157, 1280, 1424, 1664, 1780, 2080, 2314, 2848, 3328, 3560, 4160, 4628, 5696, 5785, 7120, 7921, 8320, 9256, 11392, 11570, 14240, 15842, 16640, 18512, 22784, 23140, 28480, 31684, 37024, 39605, 46280, 56960, 63368, 74048, 79210, 92560, 102973, 113920, 126736, 148096, 158420, 185120, 205946, 253472, 296192, 316840, 370240, 411892, 506944, 514865, 633680, 740480, 823784, 1013888, 1029730, 1267360, 1480960, 1647568, 2027776, 2059460, 2534720, 3295136, 4118920, 5069440, 6590272, 8237840, 10138880, 13180544, 16475680, 26361088, 32951360, 65902720, 131805440]

約数ペア:

[(1, 131805440), (2, 65902720), (4, 32951360), (5, 26361088), (8, 16475680), (10, 13180544), (13, 10138880), (16, 8237840), (20, 6590272), (26, 5069440), (32, 4118920), (40, 3295136), (52, 2534720), (64, 2059460), (65, 2027776), (80, 1647568), (89, 1480960), (104, 1267360), (128, 1029730), (130, 1013888), (160, 823784), (178, 740480), (208, 633680), (256, 514865), (260, 506944), (320, 411892), (356, 370240), (416, 316840), (445, 296192), (520, 253472), (640, 205946), (712, 185120), (832, 158420), (890, 148096), (1040, 126736), (1157, 113920), (1280, 102973), (1424, 92560), (1664, 79210), (1780, 74048), (2080, 63368), (2314, 56960), (2848, 46280), (3328, 39605), (3560, 37024), (4160, 31684), (4628, 28480), (5696, 23140), (5785, 22784), (7120, 18512), (7921, 16640), (8320, 15842), (9256, 14240), (11392, 11570)]