128449580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{131071}}^1$

素因数の和:131094

約数の個数: 36

約数和(自身を含む): 313786368

約数和(自身を除く): 185336788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 131071, 262142, 524284, 655355, 917497, 1310710, 1834994, 2621420, 3669988, 4587485, 6422479, 9174970, 12844958, 18349940, 25689916, 32112395, 64224790, 128449580]

約数ペア:

[(1, 128449580), (2, 64224790), (4, 32112395), (5, 25689916), (7, 18349940), (10, 12844958), (14, 9174970), (20, 6422479), (28, 4587485), (35, 3669988), (49, 2621420), (70, 1834994), (98, 1310710), (140, 917497), (196, 655355), (245, 524284), (490, 262142), (980, 131071)]