18844976

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{877}}^1$

素因数の和:981

約数の個数: 40

約数和(自身を含む): 39193920

約数和(自身を除く): 20348944

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 79, 136, 158, 272, 316, 632, 877, 1264, 1343, 1754, 2686, 3508, 5372, 7016, 10744, 14032, 14909, 21488, 29818, 59636, 69283, 119272, 138566, 238544, 277132, 554264, 1108528, 1177811, 2355622, 4711244, 9422488, 18844976]

約数ペア:

[(1, 18844976), (2, 9422488), (4, 4711244), (8, 2355622), (16, 1177811), (17, 1108528), (34, 554264), (68, 277132), (79, 238544), (136, 138566), (158, 119272), (272, 69283), (316, 59636), (632, 29818), (877, 21488), (1264, 14909), (1343, 14032), (1754, 10744), (2686, 7016), (3508, 5372)]