25416620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 54885600

約数和(自身を除く): 29468980

約数列:

[1, 2, 4, 5, 10, 20, 89, 109, 131, 178, 218, 262, 356, 436, 445, 524, 545, 655, 890, 1090, 1310, 1780, 2180, 2620, 9701, 11659, 14279, 19402, 23318, 28558, 38804, 46636, 48505, 57116, 58295, 71395, 97010, 116590, 142790, 194020, 233180, 285580, 1270831, 2541662, 5083324, 6354155, 12708310, 25416620]

約数ペア:

[(1, 25416620), (2, 12708310), (4, 6354155), (5, 5083324), (10, 2541662), (20, 1270831), (89, 285580), (109, 233180), (131, 194020), (178, 142790), (218, 116590), (262, 97010), (356, 71395), (436, 58295), (445, 57116), (524, 48505), (545, 46636), (655, 38804), (890, 28558), (1090, 23318), (1310, 19402), (1780, 14279), (2180, 11659), (2620, 9701)]