28681250

素因数分解:

$2^1\times 5^5\times {\mathrm{13}}^1\times {\mathrm{353}}^1$

素因数の和:393

約数の個数: 48

約数和(自身を含む): 58074408

約数和(自身を除く): 29393158

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 353, 625, 650, 706, 1250, 1625, 1765, 3125, 3250, 3530, 4589, 6250, 8125, 8825, 9178, 16250, 17650, 22945, 40625, 44125, 45890, 81250, 88250, 114725, 220625, 229450, 441250, 573625, 1103125, 1147250, 2206250, 2868125, 5736250, 14340625, 28681250]

約数ペア:

[(1, 28681250), (2, 14340625), (5, 5736250), (10, 2868125), (13, 2206250), (25, 1147250), (26, 1103125), (50, 573625), (65, 441250), (125, 229450), (130, 220625), (250, 114725), (325, 88250), (353, 81250), (625, 45890), (650, 44125), (706, 40625), (1250, 22945), (1625, 17650), (1765, 16250), (3125, 9178), (3250, 8825), (3530, 8125), (4589, 6250)]