21469316

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 43955520

約数和(自身を除く): 22486204

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 61, 76, 122, 209, 244, 418, 421, 671, 836, 842, 1159, 1342, 1684, 2318, 2684, 4631, 4636, 7999, 9262, 12749, 15998, 18524, 25498, 25681, 31996, 50996, 51362, 87989, 102724, 175978, 282491, 351956, 487939, 564982, 975878, 1129964, 1951756, 5367329, 10734658, 21469316]

約数ペア:

[(1, 21469316), (2, 10734658), (4, 5367329), (11, 1951756), (19, 1129964), (22, 975878), (38, 564982), (44, 487939), (61, 351956), (76, 282491), (122, 175978), (209, 102724), (244, 87989), (418, 51362), (421, 50996), (671, 31996), (836, 25681), (842, 25498), (1159, 18524), (1342, 15998), (1684, 12749), (2318, 9262), (2684, 7999), (4631, 4636)]