78191840

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:157

約数の個数: 144

約数和(自身を含む): 208882800

約数和(自身を除く): 130690960

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 68, 76, 80, 85, 89, 95, 136, 152, 160, 170, 178, 190, 272, 289, 304, 323, 340, 356, 380, 445, 544, 578, 608, 646, 680, 712, 760, 890, 1156, 1292, 1360, 1424, 1445, 1513, 1520, 1615, 1691, 1780, 2312, 2584, 2720, 2848, 2890, 3026, 3040, 3230, 3382, 3560, 4624, 5168, 5491, 5780, 6052, 6460, 6764, 7120, 7565, 8455, 9248, 10336, 10982, 11560, 12104, 12920, 13528, 14240, 15130, 16910, 21964, 23120, 24208, 25721, 25840, 27056, 27455, 28747, 30260, 33820, 43928, 46240, 48416, 51442, 51680, 54112, 54910, 57494, 60520, 67640, 87856, 102884, 109820, 114988, 121040, 128605, 135280, 143735, 175712, 205768, 219640, 229976, 242080, 257210, 270560, 287470, 411536, 439280, 459952, 488699, 514420, 574940, 823072, 878560, 919904, 977398, 1028840, 1149880, 1954796, 2057680, 2299760, 2443495, 3909592, 4115360, 4599520, 4886990, 7819184, 9773980, 15638368, 19547960, 39095920, 78191840]

約数ペア:

[(1, 78191840), (2, 39095920), (4, 19547960), (5, 15638368), (8, 9773980), (10, 7819184), (16, 4886990), (17, 4599520), (19, 4115360), (20, 3909592), (32, 2443495), (34, 2299760), (38, 2057680), (40, 1954796), (68, 1149880), (76, 1028840), (80, 977398), (85, 919904), (89, 878560), (95, 823072), (136, 574940), (152, 514420), (160, 488699), (170, 459952), (178, 439280), (190, 411536), (272, 287470), (289, 270560), (304, 257210), (323, 242080), (340, 229976), (356, 219640), (380, 205768), (445, 175712), (544, 143735), (578, 135280), (608, 128605), (646, 121040), (680, 114988), (712, 109820), (760, 102884), (890, 87856), (1156, 67640), (1292, 60520), (1360, 57494), (1424, 54910), (1445, 54112), (1513, 51680), (1520, 51442), (1615, 48416), (1691, 46240), (1780, 43928), (2312, 33820), (2584, 30260), (2720, 28747), (2848, 27455), (2890, 27056), (3026, 25840), (3040, 25721), (3230, 24208), (3382, 23120), (3560, 21964), (4624, 16910), (5168, 15130), (5491, 14240), (5780, 13528), (6052, 12920), (6460, 12104), (6764, 11560), (7120, 10982), (7565, 10336), (8455, 9248)]