128827980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{271}}^1$

素因数の和:444

約数の個数: 144

約数和(自身を含む): 415833600

約数和(自身を除く): 287005620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 139, 171, 180, 190, 228, 271, 278, 285, 342, 380, 417, 542, 556, 570, 684, 695, 813, 834, 855, 1084, 1140, 1251, 1355, 1390, 1626, 1668, 1710, 2085, 2439, 2502, 2641, 2710, 2780, 3252, 3420, 4065, 4170, 4878, 5004, 5149, 5282, 5420, 6255, 7923, 8130, 8340, 9756, 10298, 10564, 12195, 12510, 13205, 15447, 15846, 16260, 20596, 23769, 24390, 25020, 25745, 26410, 30894, 31692, 37669, 39615, 46341, 47538, 48780, 51490, 52820, 61788, 75338, 77235, 79230, 92682, 95076, 102980, 113007, 118845, 150676, 154470, 158460, 185364, 188345, 226014, 231705, 237690, 308940, 339021, 376690, 452028, 463410, 475380, 565035, 678042, 715711, 753380, 926820, 1130070, 1356084, 1431422, 1695105, 2147133, 2260140, 2862844, 3390210, 3578555, 4294266, 6441399, 6780420, 7157110, 8588532, 10735665, 12882798, 14314220, 21471330, 25765596, 32206995, 42942660, 64413990, 128827980]

約数ペア:

[(1, 128827980), (2, 64413990), (3, 42942660), (4, 32206995), (5, 25765596), (6, 21471330), (9, 14314220), (10, 12882798), (12, 10735665), (15, 8588532), (18, 7157110), (19, 6780420), (20, 6441399), (30, 4294266), (36, 3578555), (38, 3390210), (45, 2862844), (57, 2260140), (60, 2147133), (76, 1695105), (90, 1431422), (95, 1356084), (114, 1130070), (139, 926820), (171, 753380), (180, 715711), (190, 678042), (228, 565035), (271, 475380), (278, 463410), (285, 452028), (342, 376690), (380, 339021), (417, 308940), (542, 237690), (556, 231705), (570, 226014), (684, 188345), (695, 185364), (813, 158460), (834, 154470), (855, 150676), (1084, 118845), (1140, 113007), (1251, 102980), (1355, 95076), (1390, 92682), (1626, 79230), (1668, 77235), (1710, 75338), (2085, 61788), (2439, 52820), (2502, 51490), (2641, 48780), (2710, 47538), (2780, 46341), (3252, 39615), (3420, 37669), (4065, 31692), (4170, 30894), (4878, 26410), (5004, 25745), (5149, 25020), (5282, 24390), (5420, 23769), (6255, 20596), (7923, 16260), (8130, 15846), (8340, 15447), (9756, 13205), (10298, 12510), (10564, 12195)]