19515872

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 40334112

約数和(自身を除く): 20818240

約数列:

[1, 2, 4, 8, 16, 32, 37, 53, 74, 106, 148, 212, 296, 311, 424, 592, 622, 848, 1184, 1244, 1696, 1961, 2488, 3922, 4976, 7844, 9952, 11507, 15688, 16483, 23014, 31376, 32966, 46028, 62752, 65932, 92056, 131864, 184112, 263728, 368224, 527456, 609871, 1219742, 2439484, 4878968, 9757936, 19515872]

約数ペア:

[(1, 19515872), (2, 9757936), (4, 4878968), (8, 2439484), (16, 1219742), (32, 609871), (37, 527456), (53, 368224), (74, 263728), (106, 184112), (148, 131864), (212, 92056), (296, 65932), (311, 62752), (424, 46028), (592, 32966), (622, 31376), (848, 23014), (1184, 16483), (1244, 15688), (1696, 11507), (1961, 9952), (2488, 7844), (3922, 4976)]