217907980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{10079}}^1$

素因数の和:10158

約数の個数: 48

約数和(自身を含む): 487710720

約数和(自身を除く): 269802740

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 47, 92, 94, 115, 188, 230, 235, 460, 470, 940, 1081, 2162, 4324, 5405, 10079, 10810, 20158, 21620, 40316, 50395, 100790, 201580, 231817, 463634, 473713, 927268, 947426, 1159085, 1894852, 2318170, 2368565, 4636340, 4737130, 9474260, 10895399, 21790798, 43581596, 54476995, 108953990, 217907980]

約数ペア:

[(1, 217907980), (2, 108953990), (4, 54476995), (5, 43581596), (10, 21790798), (20, 10895399), (23, 9474260), (46, 4737130), (47, 4636340), (92, 2368565), (94, 2318170), (115, 1894852), (188, 1159085), (230, 947426), (235, 927268), (460, 473713), (470, 463634), (940, 231817), (1081, 201580), (2162, 100790), (4324, 50395), (5405, 40316), (10079, 21620), (10810, 20158)]