20404450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1613}}^1$

素因数の和:1659

約数の個数: 48

約数和(自身を含む): 43229376

約数和(自身を除く): 22824926

約数列:

[1, 2, 5, 10, 11, 22, 23, 25, 46, 50, 55, 110, 115, 230, 253, 275, 506, 550, 575, 1150, 1265, 1613, 2530, 3226, 6325, 8065, 12650, 16130, 17743, 35486, 37099, 40325, 74198, 80650, 88715, 177430, 185495, 370990, 408089, 443575, 816178, 887150, 927475, 1854950, 2040445, 4080890, 10202225, 20404450]

約数ペア:

[(1, 20404450), (2, 10202225), (5, 4080890), (10, 2040445), (11, 1854950), (22, 927475), (23, 887150), (25, 816178), (46, 443575), (50, 408089), (55, 370990), (110, 185495), (115, 177430), (230, 88715), (253, 80650), (275, 74198), (506, 40325), (550, 37099), (575, 35486), (1150, 17743), (1265, 16130), (1613, 12650), (2530, 8065), (3226, 6325)]