19728840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{509}}^1$

素因数の和:559

約数の個数: 128

約数和(自身を含む): 66096000

約数和(自身を除く): 46367160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 19, 20, 24, 30, 34, 38, 40, 51, 57, 60, 68, 76, 85, 95, 102, 114, 120, 136, 152, 170, 190, 204, 228, 255, 285, 323, 340, 380, 408, 456, 509, 510, 570, 646, 680, 760, 969, 1018, 1020, 1140, 1292, 1527, 1615, 1938, 2036, 2040, 2280, 2545, 2584, 3054, 3230, 3876, 4072, 4845, 5090, 6108, 6460, 7635, 7752, 8653, 9671, 9690, 10180, 12216, 12920, 15270, 17306, 19342, 19380, 20360, 25959, 29013, 30540, 34612, 38684, 38760, 43265, 48355, 51918, 58026, 61080, 69224, 77368, 86530, 96710, 103836, 116052, 129795, 145065, 164407, 173060, 193420, 207672, 232104, 259590, 290130, 328814, 346120, 386840, 493221, 519180, 580260, 657628, 822035, 986442, 1038360, 1160520, 1315256, 1644070, 1972884, 2466105, 3288140, 3945768, 4932210, 6576280, 9864420, 19728840]

約数ペア:

[(1, 19728840), (2, 9864420), (3, 6576280), (4, 4932210), (5, 3945768), (6, 3288140), (8, 2466105), (10, 1972884), (12, 1644070), (15, 1315256), (17, 1160520), (19, 1038360), (20, 986442), (24, 822035), (30, 657628), (34, 580260), (38, 519180), (40, 493221), (51, 386840), (57, 346120), (60, 328814), (68, 290130), (76, 259590), (85, 232104), (95, 207672), (102, 193420), (114, 173060), (120, 164407), (136, 145065), (152, 129795), (170, 116052), (190, 103836), (204, 96710), (228, 86530), (255, 77368), (285, 69224), (323, 61080), (340, 58026), (380, 51918), (408, 48355), (456, 43265), (509, 38760), (510, 38684), (570, 34612), (646, 30540), (680, 29013), (760, 25959), (969, 20360), (1018, 19380), (1020, 19342), (1140, 17306), (1292, 15270), (1527, 12920), (1615, 12216), (1938, 10180), (2036, 9690), (2040, 9671), (2280, 8653), (2545, 7752), (2584, 7635), (3054, 6460), (3230, 6108), (3876, 5090), (4072, 4845)]