305881720

素因数分解:

$2^3\times 5^1\times {\mathrm{863}}^1\times {\mathrm{8861}}^1$

素因数の和:9735

約数の個数: 32

約数和(自身を含む): 689109120

約数和(自身を除く): 383227400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 863, 1726, 3452, 4315, 6904, 8630, 8861, 17260, 17722, 34520, 35444, 44305, 70888, 88610, 177220, 354440, 7647043, 15294086, 30588172, 38235215, 61176344, 76470430, 152940860, 305881720]

約数ペア:

[(1, 305881720), (2, 152940860), (4, 76470430), (5, 61176344), (8, 38235215), (10, 30588172), (20, 15294086), (40, 7647043), (863, 354440), (1726, 177220), (3452, 88610), (4315, 70888), (6904, 44305), (8630, 35444), (8861, 34520), (17260, 17722)]