21309710

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1297}}^1$

素因数の和:1388

約数の個数: 32

約数和(自身を含む): 40372992

約数和(自身を除く): 19063282

約数列:

[1, 2, 5, 10, 31, 53, 62, 106, 155, 265, 310, 530, 1297, 1643, 2594, 3286, 6485, 8215, 12970, 16430, 40207, 68741, 80414, 137482, 201035, 343705, 402070, 687410, 2130971, 4261942, 10654855, 21309710]

約数ペア:

[(1, 21309710), (2, 10654855), (5, 4261942), (10, 2130971), (31, 687410), (53, 402070), (62, 343705), (106, 201035), (155, 137482), (265, 80414), (310, 68741), (530, 40207), (1297, 16430), (1643, 12970), (2594, 8215), (3286, 6485)]