678243760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{1867}}^1$

素因数の和:2138

約数の個数: 80

約数和(自身を含む): 1667750400

約数和(自身を除く): 989506640

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 239, 304, 380, 478, 760, 956, 1195, 1520, 1867, 1912, 2390, 3734, 3824, 4541, 4780, 7468, 9082, 9335, 9560, 14936, 18164, 18670, 19120, 22705, 29872, 35473, 36328, 37340, 45410, 70946, 72656, 74680, 90820, 141892, 149360, 177365, 181640, 283784, 354730, 363280, 446213, 567568, 709460, 892426, 1418920, 1784852, 2231065, 2837840, 3569704, 4462130, 7139408, 8478047, 8924260, 16956094, 17848520, 33912188, 35697040, 42390235, 67824376, 84780470, 135648752, 169560940, 339121880, 678243760]

約数ペア:

[(1, 678243760), (2, 339121880), (4, 169560940), (5, 135648752), (8, 84780470), (10, 67824376), (16, 42390235), (19, 35697040), (20, 33912188), (38, 17848520), (40, 16956094), (76, 8924260), (80, 8478047), (95, 7139408), (152, 4462130), (190, 3569704), (239, 2837840), (304, 2231065), (380, 1784852), (478, 1418920), (760, 892426), (956, 709460), (1195, 567568), (1520, 446213), (1867, 363280), (1912, 354730), (2390, 283784), (3734, 181640), (3824, 177365), (4541, 149360), (4780, 141892), (7468, 90820), (9082, 74680), (9335, 72656), (9560, 70946), (14936, 45410), (18164, 37340), (18670, 36328), (19120, 35473), (22705, 29872)]