19405840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{751}}^1$

素因数の和:800

約数の個数: 80

約数和(自身を含む): 50353920

約数和(自身を除く): 30948080

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 751, 760, 1292, 1360, 1502, 1520, 1615, 2584, 3004, 3230, 3755, 5168, 6008, 6460, 7510, 12016, 12767, 12920, 14269, 15020, 25534, 25840, 28538, 30040, 51068, 57076, 60080, 63835, 71345, 102136, 114152, 127670, 142690, 204272, 228304, 242573, 255340, 285380, 485146, 510680, 570760, 970292, 1021360, 1141520, 1212865, 1940584, 2425730, 3881168, 4851460, 9702920, 19405840]

約数ペア:

[(1, 19405840), (2, 9702920), (4, 4851460), (5, 3881168), (8, 2425730), (10, 1940584), (16, 1212865), (17, 1141520), (19, 1021360), (20, 970292), (34, 570760), (38, 510680), (40, 485146), (68, 285380), (76, 255340), (80, 242573), (85, 228304), (95, 204272), (136, 142690), (152, 127670), (170, 114152), (190, 102136), (272, 71345), (304, 63835), (323, 60080), (340, 57076), (380, 51068), (646, 30040), (680, 28538), (751, 25840), (760, 25534), (1292, 15020), (1360, 14269), (1502, 12920), (1520, 12767), (1615, 12016), (2584, 7510), (3004, 6460), (3230, 6008), (3755, 5168)]