28320747

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{457}}^1$

素因数の和:707

約数の個数: 32

約数和(自身を含む): 46781952

約数和(自身を除く): 18461205

約数列:

[1, 3, 7, 13, 21, 39, 91, 227, 273, 457, 681, 1371, 1589, 2951, 3199, 4767, 5941, 8853, 9597, 17823, 20657, 41587, 61971, 103739, 124761, 311217, 726173, 1348607, 2178519, 4045821, 9440249, 28320747]

約数ペア:

[(1, 28320747), (3, 9440249), (7, 4045821), (13, 2178519), (21, 1348607), (39, 726173), (91, 311217), (227, 124761), (273, 103739), (457, 61971), (681, 41587), (1371, 20657), (1589, 17823), (2951, 9597), (3199, 8853), (4767, 5941)]