20726445

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 36122112

約数和(自身を除く): 15395667

約数列:

[1, 3, 5, 15, 29, 31, 53, 87, 93, 145, 155, 159, 265, 435, 465, 795, 841, 899, 1537, 1643, 2523, 2697, 4205, 4495, 4611, 4929, 7685, 8215, 12615, 13485, 23055, 24645, 26071, 44573, 47647, 78213, 130355, 133719, 142941, 222865, 238235, 391065, 668595, 714705, 1381763, 4145289, 6908815, 20726445]

約数ペア:

[(1, 20726445), (3, 6908815), (5, 4145289), (15, 1381763), (29, 714705), (31, 668595), (53, 391065), (87, 238235), (93, 222865), (145, 142941), (155, 133719), (159, 130355), (265, 78213), (435, 47647), (465, 44573), (795, 26071), (841, 24645), (899, 23055), (1537, 13485), (1643, 12615), (2523, 8215), (2697, 7685), (4205, 4929), (4495, 4611)]