81279040

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:324

約数の個数: 112

約数和(自身を含む): 208922112

約数和(自身を除く): 127643072

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 67, 68, 80, 85, 134, 136, 160, 170, 223, 268, 272, 320, 335, 340, 446, 536, 544, 670, 680, 892, 1072, 1088, 1115, 1139, 1340, 1360, 1784, 2144, 2230, 2278, 2680, 2720, 3568, 3791, 4288, 4460, 4556, 5360, 5440, 5695, 7136, 7582, 8920, 9112, 10720, 11390, 14272, 14941, 15164, 17840, 18224, 18955, 21440, 22780, 29882, 30328, 35680, 36448, 37910, 45560, 59764, 60656, 71360, 72896, 74705, 75820, 91120, 119528, 121312, 149410, 151640, 182240, 239056, 242624, 253997, 298820, 303280, 364480, 478112, 507994, 597640, 606560, 956224, 1015988, 1195280, 1213120, 1269985, 2031976, 2390560, 2539970, 4063952, 4781120, 5079940, 8127904, 10159880, 16255808, 20319760, 40639520, 81279040]

約数ペア:

[(1, 81279040), (2, 40639520), (4, 20319760), (5, 16255808), (8, 10159880), (10, 8127904), (16, 5079940), (17, 4781120), (20, 4063952), (32, 2539970), (34, 2390560), (40, 2031976), (64, 1269985), (67, 1213120), (68, 1195280), (80, 1015988), (85, 956224), (134, 606560), (136, 597640), (160, 507994), (170, 478112), (223, 364480), (268, 303280), (272, 298820), (320, 253997), (335, 242624), (340, 239056), (446, 182240), (536, 151640), (544, 149410), (670, 121312), (680, 119528), (892, 91120), (1072, 75820), (1088, 74705), (1115, 72896), (1139, 71360), (1340, 60656), (1360, 59764), (1784, 45560), (2144, 37910), (2230, 36448), (2278, 35680), (2680, 30328), (2720, 29882), (3568, 22780), (3791, 21440), (4288, 18955), (4460, 18224), (4556, 17840), (5360, 15164), (5440, 14941), (5695, 14272), (7136, 11390), (7582, 10720), (8920, 9112)]