128855720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{457}}^1$

素因数の和:547

約数の個数: 128

約数和(自身を含む): 356140800

約数和(自身を除く): 227285080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 53, 56, 70, 76, 95, 106, 133, 140, 152, 190, 212, 265, 266, 280, 371, 380, 424, 457, 530, 532, 665, 742, 760, 914, 1007, 1060, 1064, 1330, 1484, 1828, 1855, 2014, 2120, 2285, 2660, 2968, 3199, 3656, 3710, 4028, 4570, 5035, 5320, 6398, 7049, 7420, 8056, 8683, 9140, 10070, 12796, 14098, 14840, 15995, 17366, 18280, 20140, 24221, 25592, 28196, 31990, 34732, 35245, 40280, 43415, 48442, 56392, 60781, 63980, 69464, 70490, 86830, 96884, 121105, 121562, 127960, 140980, 169547, 173660, 193768, 242210, 243124, 281960, 303905, 339094, 347320, 460199, 484420, 486248, 607810, 678188, 847735, 920398, 968840, 1215620, 1356376, 1695470, 1840796, 2300995, 2431240, 3221393, 3390940, 3681592, 4601990, 6442786, 6781880, 9203980, 12885572, 16106965, 18407960, 25771144, 32213930, 64427860, 128855720]

約数ペア:

[(1, 128855720), (2, 64427860), (4, 32213930), (5, 25771144), (7, 18407960), (8, 16106965), (10, 12885572), (14, 9203980), (19, 6781880), (20, 6442786), (28, 4601990), (35, 3681592), (38, 3390940), (40, 3221393), (53, 2431240), (56, 2300995), (70, 1840796), (76, 1695470), (95, 1356376), (106, 1215620), (133, 968840), (140, 920398), (152, 847735), (190, 678188), (212, 607810), (265, 486248), (266, 484420), (280, 460199), (371, 347320), (380, 339094), (424, 303905), (457, 281960), (530, 243124), (532, 242210), (665, 193768), (742, 173660), (760, 169547), (914, 140980), (1007, 127960), (1060, 121562), (1064, 121105), (1330, 96884), (1484, 86830), (1828, 70490), (1855, 69464), (2014, 63980), (2120, 60781), (2285, 56392), (2660, 48442), (2968, 43415), (3199, 40280), (3656, 35245), (3710, 34732), (4028, 31990), (4570, 28196), (5035, 25592), (5320, 24221), (6398, 20140), (7049, 18280), (7420, 17366), (8056, 15995), (8683, 14840), (9140, 14098), (10070, 12796)]