19381520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:384

約数の個数: 80

約数和(自身を含む): 48746880

約数和(自身を除く): 29365360

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 152, 164, 190, 205, 304, 311, 328, 380, 410, 622, 656, 760, 779, 820, 1244, 1520, 1555, 1558, 1640, 2488, 3110, 3116, 3280, 3895, 4976, 5909, 6220, 6232, 7790, 11818, 12440, 12464, 12751, 15580, 23636, 24880, 25502, 29545, 31160, 47272, 51004, 59090, 62320, 63755, 94544, 102008, 118180, 127510, 204016, 236360, 242269, 255020, 472720, 484538, 510040, 969076, 1020080, 1211345, 1938152, 2422690, 3876304, 4845380, 9690760, 19381520]

約数ペア:

[(1, 19381520), (2, 9690760), (4, 4845380), (5, 3876304), (8, 2422690), (10, 1938152), (16, 1211345), (19, 1020080), (20, 969076), (38, 510040), (40, 484538), (41, 472720), (76, 255020), (80, 242269), (82, 236360), (95, 204016), (152, 127510), (164, 118180), (190, 102008), (205, 94544), (304, 63755), (311, 62320), (328, 59090), (380, 51004), (410, 47272), (622, 31160), (656, 29545), (760, 25502), (779, 24880), (820, 23636), (1244, 15580), (1520, 12751), (1555, 12464), (1558, 12440), (1640, 11818), (2488, 7790), (3110, 6232), (3116, 6220), (3280, 5909), (3895, 4976)]