163947140

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{23899}}^1$

素因数の和:23929

約数の個数: 48

約数和(自身を含む): 401520000

約数和(自身を除く): 237572860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 23899, 47798, 95596, 119495, 167293, 238990, 334586, 477980, 669172, 836465, 1171051, 1672930, 2342102, 3345860, 4684204, 5855255, 8197357, 11710510, 16394714, 23421020, 32789428, 40986785, 81973570, 163947140]

約数ペア:

[(1, 163947140), (2, 81973570), (4, 40986785), (5, 32789428), (7, 23421020), (10, 16394714), (14, 11710510), (20, 8197357), (28, 5855255), (35, 4684204), (49, 3345860), (70, 2342102), (98, 1672930), (140, 1171051), (196, 836465), (245, 669172), (343, 477980), (490, 334586), (686, 238990), (980, 167293), (1372, 119495), (1715, 95596), (3430, 47798), (6860, 23899)]