261931648

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:426

約数の個数: 128

約数和(自身を含む): 623946240

約数和(自身を除く): 362014592

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 31, 32, 34, 44, 62, 64, 68, 88, 124, 128, 136, 176, 187, 248, 272, 341, 352, 353, 374, 496, 527, 544, 682, 704, 706, 748, 992, 1054, 1088, 1364, 1408, 1412, 1496, 1984, 2108, 2176, 2728, 2824, 2992, 3883, 3968, 4216, 5456, 5648, 5797, 5984, 6001, 7766, 8432, 10912, 10943, 11296, 11594, 11968, 12002, 15532, 16864, 21824, 21886, 22592, 23188, 23936, 24004, 31064, 33728, 43648, 43772, 45184, 46376, 48008, 62128, 66011, 67456, 87544, 92752, 96016, 120373, 124256, 132022, 175088, 185504, 186031, 192032, 240746, 248512, 264044, 350176, 371008, 372062, 384064, 481492, 497024, 528088, 700352, 742016, 744124, 768128, 962984, 1056176, 1400704, 1488248, 1925968, 2046341, 2112352, 2976496, 3851936, 4092682, 4224704, 5952992, 7703872, 8185364, 8449408, 11905984, 15407744, 16370728, 23811968, 32741456, 65482912, 130965824, 261931648]

約数ペア:

[(1, 261931648), (2, 130965824), (4, 65482912), (8, 32741456), (11, 23811968), (16, 16370728), (17, 15407744), (22, 11905984), (31, 8449408), (32, 8185364), (34, 7703872), (44, 5952992), (62, 4224704), (64, 4092682), (68, 3851936), (88, 2976496), (124, 2112352), (128, 2046341), (136, 1925968), (176, 1488248), (187, 1400704), (248, 1056176), (272, 962984), (341, 768128), (352, 744124), (353, 742016), (374, 700352), (496, 528088), (527, 497024), (544, 481492), (682, 384064), (704, 372062), (706, 371008), (748, 350176), (992, 264044), (1054, 248512), (1088, 240746), (1364, 192032), (1408, 186031), (1412, 185504), (1496, 175088), (1984, 132022), (2108, 124256), (2176, 120373), (2728, 96016), (2824, 92752), (2992, 87544), (3883, 67456), (3968, 66011), (4216, 62128), (5456, 48008), (5648, 46376), (5797, 45184), (5984, 43772), (6001, 43648), (7766, 33728), (8432, 31064), (10912, 24004), (10943, 23936), (11296, 23188), (11594, 22592), (11968, 21886), (12002, 21824), (15532, 16864)]