312778840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1073

約数の個数: 128

約数和(自身を含む): 827781120

約数和(自身を除く): 515002280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 31, 40, 44, 46, 55, 62, 88, 92, 110, 115, 124, 155, 184, 220, 230, 248, 253, 310, 341, 440, 460, 506, 620, 682, 713, 920, 997, 1012, 1240, 1265, 1364, 1426, 1705, 1994, 2024, 2530, 2728, 2852, 3410, 3565, 3988, 4985, 5060, 5704, 6820, 7130, 7843, 7976, 9970, 10120, 10967, 13640, 14260, 15686, 19940, 21934, 22931, 28520, 30907, 31372, 39215, 39880, 43868, 45862, 54835, 61814, 62744, 78430, 87736, 91724, 109670, 114655, 123628, 154535, 156860, 183448, 219340, 229310, 247256, 252241, 309070, 313720, 339977, 438680, 458620, 504482, 618140, 679954, 710861, 917240, 1008964, 1236280, 1261205, 1359908, 1421722, 1699885, 2017928, 2522410, 2719816, 2843444, 3399770, 3554305, 5044820, 5686888, 6799540, 7108610, 7819471, 10089640, 13599080, 14217220, 15638942, 28434440, 31277884, 39097355, 62555768, 78194710, 156389420, 312778840]

約数ペア:

[(1, 312778840), (2, 156389420), (4, 78194710), (5, 62555768), (8, 39097355), (10, 31277884), (11, 28434440), (20, 15638942), (22, 14217220), (23, 13599080), (31, 10089640), (40, 7819471), (44, 7108610), (46, 6799540), (55, 5686888), (62, 5044820), (88, 3554305), (92, 3399770), (110, 2843444), (115, 2719816), (124, 2522410), (155, 2017928), (184, 1699885), (220, 1421722), (230, 1359908), (248, 1261205), (253, 1236280), (310, 1008964), (341, 917240), (440, 710861), (460, 679954), (506, 618140), (620, 504482), (682, 458620), (713, 438680), (920, 339977), (997, 313720), (1012, 309070), (1240, 252241), (1265, 247256), (1364, 229310), (1426, 219340), (1705, 183448), (1994, 156860), (2024, 154535), (2530, 123628), (2728, 114655), (2852, 109670), (3410, 91724), (3565, 87736), (3988, 78430), (4985, 62744), (5060, 61814), (5704, 54835), (6820, 45862), (7130, 43868), (7843, 39880), (7976, 39215), (9970, 31372), (10120, 30907), (10967, 28520), (13640, 22931), (14260, 21934), (15686, 19940)]