25639940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 56730240

約数和(自身を除く): 31090300

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 139, 230, 278, 401, 460, 556, 695, 802, 1390, 1604, 2005, 2780, 3197, 4010, 6394, 8020, 9223, 12788, 15985, 18446, 31970, 36892, 46115, 55739, 63940, 92230, 111478, 184460, 222956, 278695, 557390, 1114780, 1281997, 2563994, 5127988, 6409985, 12819970, 25639940]

約数ペア:

[(1, 25639940), (2, 12819970), (4, 6409985), (5, 5127988), (10, 2563994), (20, 1281997), (23, 1114780), (46, 557390), (92, 278695), (115, 222956), (139, 184460), (230, 111478), (278, 92230), (401, 63940), (460, 55739), (556, 46115), (695, 36892), (802, 31970), (1390, 18446), (1604, 15985), (2005, 12788), (2780, 9223), (3197, 8020), (4010, 6394)]