81982720

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3371}}^1$

素因数の和:3411

約数の個数: 72

約数和(自身を含む): 206771040

約数和(自身を除く): 124788320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 608, 640, 760, 1216, 1280, 1520, 2432, 3040, 3371, 4864, 6080, 6742, 12160, 13484, 16855, 24320, 26968, 33710, 53936, 64049, 67420, 107872, 128098, 134840, 215744, 256196, 269680, 320245, 431488, 512392, 539360, 640490, 862976, 1024784, 1078720, 1280980, 2049568, 2157440, 2561960, 4099136, 4314880, 5123920, 8198272, 10247840, 16396544, 20495680, 40991360, 81982720]

約数ペア:

[(1, 81982720), (2, 40991360), (4, 20495680), (5, 16396544), (8, 10247840), (10, 8198272), (16, 5123920), (19, 4314880), (20, 4099136), (32, 2561960), (38, 2157440), (40, 2049568), (64, 1280980), (76, 1078720), (80, 1024784), (95, 862976), (128, 640490), (152, 539360), (160, 512392), (190, 431488), (256, 320245), (304, 269680), (320, 256196), (380, 215744), (608, 134840), (640, 128098), (760, 107872), (1216, 67420), (1280, 64049), (1520, 53936), (2432, 33710), (3040, 26968), (3371, 24320), (4864, 16855), (6080, 13484), (6742, 12160)]