215417860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{2393}}^1$

素因数の和:3052

約数の個数: 48

約数和(自身を含む): 518023296

約数和(自身を除く): 302605436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 643, 1286, 2393, 2572, 3215, 4501, 4786, 6430, 9002, 9572, 11965, 12860, 16751, 18004, 22505, 23930, 33502, 45010, 47860, 67004, 83755, 90020, 167510, 335020, 1538699, 3077398, 6154796, 7693495, 10770893, 15386990, 21541786, 30773980, 43083572, 53854465, 107708930, 215417860]

約数ペア:

[(1, 215417860), (2, 107708930), (4, 53854465), (5, 43083572), (7, 30773980), (10, 21541786), (14, 15386990), (20, 10770893), (28, 7693495), (35, 6154796), (70, 3077398), (140, 1538699), (643, 335020), (1286, 167510), (2393, 90020), (2572, 83755), (3215, 67004), (4501, 47860), (4786, 45010), (6430, 33502), (9002, 23930), (9572, 22505), (11965, 18004), (12860, 16751)]