25280140

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 54627552

約数和(自身を除く): 29347412

約数列:

[1, 2, 4, 5, 10, 20, 83, 97, 157, 166, 194, 314, 332, 388, 415, 485, 628, 785, 830, 970, 1570, 1660, 1940, 3140, 8051, 13031, 15229, 16102, 26062, 30458, 32204, 40255, 52124, 60916, 65155, 76145, 80510, 130310, 152290, 161020, 260620, 304580, 1264007, 2528014, 5056028, 6320035, 12640070, 25280140]

約数ペア:

[(1, 25280140), (2, 12640070), (4, 6320035), (5, 5056028), (10, 2528014), (20, 1264007), (83, 304580), (97, 260620), (157, 161020), (166, 152290), (194, 130310), (314, 80510), (332, 76145), (388, 65155), (415, 60916), (485, 52124), (628, 40255), (785, 32204), (830, 30458), (970, 26062), (1570, 16102), (1660, 15229), (1940, 13031), (3140, 8051)]