27780880

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:224

約数の個数: 80

約数和(自身を含む): 67388544

約数和(自身を除く): 39607664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 71, 73, 80, 134, 142, 146, 268, 284, 292, 335, 355, 365, 536, 568, 584, 670, 710, 730, 1072, 1136, 1168, 1340, 1420, 1460, 2680, 2840, 2920, 4757, 4891, 5183, 5360, 5680, 5840, 9514, 9782, 10366, 19028, 19564, 20732, 23785, 24455, 25915, 38056, 39128, 41464, 47570, 48910, 51830, 76112, 78256, 82928, 95140, 97820, 103660, 190280, 195640, 207320, 347261, 380560, 391280, 414640, 694522, 1389044, 1736305, 2778088, 3472610, 5556176, 6945220, 13890440, 27780880]

約数ペア:

[(1, 27780880), (2, 13890440), (4, 6945220), (5, 5556176), (8, 3472610), (10, 2778088), (16, 1736305), (20, 1389044), (40, 694522), (67, 414640), (71, 391280), (73, 380560), (80, 347261), (134, 207320), (142, 195640), (146, 190280), (268, 103660), (284, 97820), (292, 95140), (335, 82928), (355, 78256), (365, 76112), (536, 51830), (568, 48910), (584, 47570), (670, 41464), (710, 39128), (730, 38056), (1072, 25915), (1136, 24455), (1168, 23785), (1340, 20732), (1420, 19564), (1460, 19028), (2680, 10366), (2840, 9782), (2920, 9514), (4757, 5840), (4891, 5680), (5183, 5360)]