257451920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{7907}}^1$

素因数の和:7968

約数の個数: 80

約数和(自身を含む): 670724928

約数和(自身を除く): 413273008

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 407, 440, 592, 740, 814, 880, 1480, 1628, 2035, 2960, 3256, 4070, 6512, 7907, 8140, 15814, 16280, 31628, 32560, 39535, 63256, 79070, 86977, 126512, 158140, 173954, 292559, 316280, 347908, 434885, 585118, 632560, 695816, 869770, 1170236, 1391632, 1462795, 1739540, 2340472, 2925590, 3218149, 3479080, 4680944, 5851180, 6436298, 6958160, 11702360, 12872596, 16090745, 23404720, 25745192, 32181490, 51490384, 64362980, 128725960, 257451920]

約数ペア:

[(1, 257451920), (2, 128725960), (4, 64362980), (5, 51490384), (8, 32181490), (10, 25745192), (11, 23404720), (16, 16090745), (20, 12872596), (22, 11702360), (37, 6958160), (40, 6436298), (44, 5851180), (55, 4680944), (74, 3479080), (80, 3218149), (88, 2925590), (110, 2340472), (148, 1739540), (176, 1462795), (185, 1391632), (220, 1170236), (296, 869770), (370, 695816), (407, 632560), (440, 585118), (592, 434885), (740, 347908), (814, 316280), (880, 292559), (1480, 173954), (1628, 158140), (2035, 126512), (2960, 86977), (3256, 79070), (4070, 63256), (6512, 39535), (7907, 32560), (8140, 31628), (15814, 16280)]