19771952

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{463}}^1$

素因数の和:645

約数の個数: 40

約数和(自身を含む): 40908096

約数和(自身を除く): 21136144

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 157, 272, 314, 463, 628, 926, 1256, 1852, 2512, 2669, 3704, 5338, 7408, 7871, 10676, 15742, 21352, 31484, 42704, 62968, 72691, 125936, 145382, 290764, 581528, 1163056, 1235747, 2471494, 4942988, 9885976, 19771952]

約数ペア:

[(1, 19771952), (2, 9885976), (4, 4942988), (8, 2471494), (16, 1235747), (17, 1163056), (34, 581528), (68, 290764), (136, 145382), (157, 125936), (272, 72691), (314, 62968), (463, 42704), (628, 31484), (926, 21352), (1256, 15742), (1852, 10676), (2512, 7871), (2669, 7408), (3704, 5338)]