21065040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1721}}^1$

素因数の和:1757

約数の個数: 120

約数和(自身を含む): 74948328

約数和(自身を除く): 53883288

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 170, 180, 204, 240, 255, 272, 306, 340, 360, 408, 510, 612, 680, 720, 765, 816, 1020, 1224, 1360, 1530, 1721, 2040, 2448, 3060, 3442, 4080, 5163, 6120, 6884, 8605, 10326, 12240, 13768, 15489, 17210, 20652, 25815, 27536, 29257, 30978, 34420, 41304, 51630, 58514, 61956, 68840, 77445, 82608, 87771, 103260, 117028, 123912, 137680, 146285, 154890, 175542, 206520, 234056, 247824, 263313, 292570, 309780, 351084, 413040, 438855, 468112, 526626, 585140, 619560, 702168, 877710, 1053252, 1170280, 1239120, 1316565, 1404336, 1755420, 2106504, 2340560, 2633130, 3510840, 4213008, 5266260, 7021680, 10532520, 21065040]

約数ペア:

[(1, 21065040), (2, 10532520), (3, 7021680), (4, 5266260), (5, 4213008), (6, 3510840), (8, 2633130), (9, 2340560), (10, 2106504), (12, 1755420), (15, 1404336), (16, 1316565), (17, 1239120), (18, 1170280), (20, 1053252), (24, 877710), (30, 702168), (34, 619560), (36, 585140), (40, 526626), (45, 468112), (48, 438855), (51, 413040), (60, 351084), (68, 309780), (72, 292570), (80, 263313), (85, 247824), (90, 234056), (102, 206520), (120, 175542), (136, 154890), (144, 146285), (153, 137680), (170, 123912), (180, 117028), (204, 103260), (240, 87771), (255, 82608), (272, 77445), (306, 68840), (340, 61956), (360, 58514), (408, 51630), (510, 41304), (612, 34420), (680, 30978), (720, 29257), (765, 27536), (816, 25815), (1020, 20652), (1224, 17210), (1360, 15489), (1530, 13768), (1721, 12240), (2040, 10326), (2448, 8605), (3060, 6884), (3442, 6120), (4080, 5163)]