21197388

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{389}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 52416000

約数和(自身を除く): 31218612

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 239, 389, 478, 717, 778, 956, 1167, 1434, 1556, 2334, 2868, 4541, 4668, 7391, 9082, 13623, 14782, 18164, 22173, 27246, 29564, 44346, 54492, 88692, 92971, 185942, 278913, 371884, 557826, 1115652, 1766449, 3532898, 5299347, 7065796, 10598694, 21197388]

約数ペア:

[(1, 21197388), (2, 10598694), (3, 7065796), (4, 5299347), (6, 3532898), (12, 1766449), (19, 1115652), (38, 557826), (57, 371884), (76, 278913), (114, 185942), (228, 92971), (239, 88692), (389, 54492), (478, 44346), (717, 29564), (778, 27246), (956, 22173), (1167, 18164), (1434, 14782), (1556, 13623), (2334, 9082), (2868, 7391), (4541, 4668)]