19519390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{2909}}^1$

素因数の和:2988

約数の個数: 32

約数和(自身を含む): 38970720

約数和(自身を除く): 19451330

約数列:

[1, 2, 5, 10, 11, 22, 55, 61, 110, 122, 305, 610, 671, 1342, 2909, 3355, 5818, 6710, 14545, 29090, 31999, 63998, 159995, 177449, 319990, 354898, 887245, 1774490, 1951939, 3903878, 9759695, 19519390]

約数ペア:

[(1, 19519390), (2, 9759695), (5, 3903878), (10, 1951939), (11, 1774490), (22, 887245), (55, 354898), (61, 319990), (110, 177449), (122, 159995), (305, 63998), (610, 31999), (671, 29090), (1342, 14545), (2909, 6710), (3355, 5818)]