21503735

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 8356105

約数列:

[1, 5, 11, 23, 55, 89, 115, 191, 253, 445, 955, 979, 1265, 2047, 2101, 4393, 4895, 10235, 10505, 16999, 21965, 22517, 48323, 84995, 112585, 186989, 241615, 390977, 934945, 1954885, 4300747, 21503735]

約数ペア:

[(1, 21503735), (5, 4300747), (11, 1954885), (23, 934945), (55, 390977), (89, 241615), (115, 186989), (191, 112585), (253, 84995), (445, 48323), (955, 22517), (979, 21965), (1265, 16999), (2047, 10505), (2101, 10235), (4393, 4895)]