20235440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14879}}^1$

素因数の和:14909

約数の個数: 40

約数和(自身を含む): 49818240

約数和(自身を除く): 29582800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14879, 29758, 59516, 74395, 119032, 148790, 238064, 252943, 297580, 505886, 595160, 1011772, 1190320, 1264715, 2023544, 2529430, 4047088, 5058860, 10117720, 20235440]

約数ペア:

[(1, 20235440), (2, 10117720), (4, 5058860), (5, 4047088), (8, 2529430), (10, 2023544), (16, 1264715), (17, 1190320), (20, 1011772), (34, 595160), (40, 505886), (68, 297580), (80, 252943), (85, 238064), (136, 148790), (170, 119032), (272, 74395), (340, 59516), (680, 29758), (1360, 14879)]