72180640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{223}}^1$

素因数の和:279

約数の個数: 144

約数和(自身を含む): 207954432

約数和(自身を除く): 135773792

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 160, 170, 223, 224, 238, 272, 280, 289, 340, 446, 476, 544, 560, 578, 595, 680, 892, 952, 1115, 1120, 1156, 1190, 1360, 1445, 1561, 1784, 1904, 2023, 2230, 2312, 2380, 2720, 2890, 3122, 3568, 3791, 3808, 4046, 4460, 4624, 4760, 5780, 6244, 7136, 7582, 7805, 8092, 8920, 9248, 9520, 10115, 11560, 12488, 15164, 15610, 16184, 17840, 18955, 19040, 20230, 23120, 24976, 26537, 30328, 31220, 32368, 35680, 37910, 40460, 46240, 49952, 53074, 60656, 62440, 64447, 64736, 75820, 80920, 106148, 121312, 124880, 128894, 132685, 151640, 161840, 212296, 249760, 257788, 265370, 303280, 322235, 323680, 424592, 451129, 515576, 530740, 606560, 644470, 849184, 902258, 1031152, 1061480, 1288940, 1804516, 2062304, 2122960, 2255645, 2577880, 3609032, 4245920, 4511290, 5155760, 7218064, 9022580, 10311520, 14436128, 18045160, 36090320, 72180640]

約数ペア:

[(1, 72180640), (2, 36090320), (4, 18045160), (5, 14436128), (7, 10311520), (8, 9022580), (10, 7218064), (14, 5155760), (16, 4511290), (17, 4245920), (20, 3609032), (28, 2577880), (32, 2255645), (34, 2122960), (35, 2062304), (40, 1804516), (56, 1288940), (68, 1061480), (70, 1031152), (80, 902258), (85, 849184), (112, 644470), (119, 606560), (136, 530740), (140, 515576), (160, 451129), (170, 424592), (223, 323680), (224, 322235), (238, 303280), (272, 265370), (280, 257788), (289, 249760), (340, 212296), (446, 161840), (476, 151640), (544, 132685), (560, 128894), (578, 124880), (595, 121312), (680, 106148), (892, 80920), (952, 75820), (1115, 64736), (1120, 64447), (1156, 62440), (1190, 60656), (1360, 53074), (1445, 49952), (1561, 46240), (1784, 40460), (1904, 37910), (2023, 35680), (2230, 32368), (2312, 31220), (2380, 30328), (2720, 26537), (2890, 24976), (3122, 23120), (3568, 20230), (3791, 19040), (3808, 18955), (4046, 17840), (4460, 16184), (4624, 15610), (4760, 15164), (5780, 12488), (6244, 11560), (7136, 10115), (7582, 9520), (7805, 9248), (8092, 8920)]