128015120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1259}}^1$

素因数の和:1344

約数の個数: 80

約数和(自身を含む): 314979840

約数和(自身を除く): 186964720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 205, 248, 310, 328, 410, 496, 620, 656, 820, 1240, 1259, 1271, 1640, 2480, 2518, 2542, 3280, 5036, 5084, 6295, 6355, 10072, 10168, 12590, 12710, 20144, 20336, 25180, 25420, 39029, 50360, 50840, 51619, 78058, 100720, 101680, 103238, 156116, 195145, 206476, 258095, 312232, 390290, 412952, 516190, 624464, 780580, 825904, 1032380, 1561160, 1600189, 2064760, 3122320, 3200378, 4129520, 6400756, 8000945, 12801512, 16001890, 25603024, 32003780, 64007560, 128015120]

約数ペア:

[(1, 128015120), (2, 64007560), (4, 32003780), (5, 25603024), (8, 16001890), (10, 12801512), (16, 8000945), (20, 6400756), (31, 4129520), (40, 3200378), (41, 3122320), (62, 2064760), (80, 1600189), (82, 1561160), (124, 1032380), (155, 825904), (164, 780580), (205, 624464), (248, 516190), (310, 412952), (328, 390290), (410, 312232), (496, 258095), (620, 206476), (656, 195145), (820, 156116), (1240, 103238), (1259, 101680), (1271, 100720), (1640, 78058), (2480, 51619), (2518, 50840), (2542, 50360), (3280, 39029), (5036, 25420), (5084, 25180), (6295, 20336), (6355, 20144), (10072, 12710), (10168, 12590)]