19946020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{607}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 24180188

約数列:

[1, 2, 4, 5, 10, 20, 31, 53, 62, 106, 124, 155, 212, 265, 310, 530, 607, 620, 1060, 1214, 1643, 2428, 3035, 3286, 6070, 6572, 8215, 12140, 16430, 18817, 32171, 32860, 37634, 64342, 75268, 94085, 128684, 160855, 188170, 321710, 376340, 643420, 997301, 1994602, 3989204, 4986505, 9973010, 19946020]

約数ペア:

[(1, 19946020), (2, 9973010), (4, 4986505), (5, 3989204), (10, 1994602), (20, 997301), (31, 643420), (53, 376340), (62, 321710), (106, 188170), (124, 160855), (155, 128684), (212, 94085), (265, 75268), (310, 64342), (530, 37634), (607, 32860), (620, 32171), (1060, 18817), (1214, 16430), (1643, 12140), (2428, 8215), (3035, 6572), (3286, 6070)]