163745720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:205

約数の個数: 128

約数和(自身を含む): 404490240

約数和(自身を除く): 240744520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 43, 62, 74, 83, 86, 124, 148, 155, 166, 172, 185, 215, 248, 296, 310, 332, 344, 370, 415, 430, 620, 664, 740, 830, 860, 1147, 1240, 1333, 1480, 1591, 1660, 1720, 2294, 2573, 2666, 3071, 3182, 3320, 3569, 4588, 5146, 5332, 5735, 6142, 6364, 6665, 7138, 7955, 9176, 10292, 10664, 11470, 12284, 12728, 12865, 13330, 14276, 15355, 15910, 17845, 20584, 22940, 24568, 25730, 26660, 28552, 30710, 31820, 35690, 45880, 49321, 51460, 53320, 61420, 63640, 71380, 95201, 98642, 102920, 110639, 122840, 132053, 142760, 190402, 197284, 221278, 246605, 264106, 380804, 394568, 442556, 476005, 493210, 528212, 553195, 660265, 761608, 885112, 952010, 986420, 1056424, 1106390, 1320530, 1904020, 1972840, 2212780, 2641060, 3808040, 4093643, 4425560, 5282120, 8187286, 16374572, 20468215, 32749144, 40936430, 81872860, 163745720]

約数ペア:

[(1, 163745720), (2, 81872860), (4, 40936430), (5, 32749144), (8, 20468215), (10, 16374572), (20, 8187286), (31, 5282120), (37, 4425560), (40, 4093643), (43, 3808040), (62, 2641060), (74, 2212780), (83, 1972840), (86, 1904020), (124, 1320530), (148, 1106390), (155, 1056424), (166, 986420), (172, 952010), (185, 885112), (215, 761608), (248, 660265), (296, 553195), (310, 528212), (332, 493210), (344, 476005), (370, 442556), (415, 394568), (430, 380804), (620, 264106), (664, 246605), (740, 221278), (830, 197284), (860, 190402), (1147, 142760), (1240, 132053), (1333, 122840), (1480, 110639), (1591, 102920), (1660, 98642), (1720, 95201), (2294, 71380), (2573, 63640), (2666, 61420), (3071, 53320), (3182, 51460), (3320, 49321), (3569, 45880), (4588, 35690), (5146, 31820), (5332, 30710), (5735, 28552), (6142, 26660), (6364, 25730), (6665, 24568), (7138, 22940), (7955, 20584), (9176, 17845), (10292, 15910), (10664, 15355), (11470, 14276), (12284, 13330), (12728, 12865)]