20123892500

素因数分解:

$2^2\times 5^4\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{1429}}^1$

素因数の和:1627

約数の個数: 120

約数和(自身を含む): 45405840480

約数和(自身を除く): 25281947980

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 131, 172, 215, 250, 262, 430, 500, 524, 625, 655, 860, 1075, 1250, 1310, 1429, 2150, 2500, 2620, 2858, 3275, 4300, 5375, 5633, 5716, 6550, 7145, 10750, 11266, 13100, 14290, 16375, 21500, 22532, 26875, 28165, 28580, 32750, 35725, 53750, 56330, 61447, 65500, 71450, 81875, 107500, 112660, 122894, 140825, 142900, 163750, 178625, 187199, 245788, 281650, 307235, 327500, 357250, 374398, 563300, 614470, 704125, 714500, 748796, 893125, 935995, 1228940, 1408250, 1536175, 1786250, 1871990, 2816500, 3072350, 3520625, 3572500, 3743980, 4679975, 6144700, 7041250, 7680875, 8049557, 9359950, 14082500, 15361750, 16099114, 18719900, 23399875, 30723500, 32198228, 38404375, 40247785, 46799750, 76808750, 80495570, 93599500, 116999375, 153617500, 160991140, 201238925, 233998750, 402477850, 467997500, 804955700, 1006194625, 2012389250, 4024778500, 5030973125, 10061946250, 20123892500]

約数ペア:

[(1, 20123892500), (2, 10061946250), (4, 5030973125), (5, 4024778500), (10, 2012389250), (20, 1006194625), (25, 804955700), (43, 467997500), (50, 402477850), (86, 233998750), (100, 201238925), (125, 160991140), (131, 153617500), (172, 116999375), (215, 93599500), (250, 80495570), (262, 76808750), (430, 46799750), (500, 40247785), (524, 38404375), (625, 32198228), (655, 30723500), (860, 23399875), (1075, 18719900), (1250, 16099114), (1310, 15361750), (1429, 14082500), (2150, 9359950), (2500, 8049557), (2620, 7680875), (2858, 7041250), (3275, 6144700), (4300, 4679975), (5375, 3743980), (5633, 3572500), (5716, 3520625), (6550, 3072350), (7145, 2816500), (10750, 1871990), (11266, 1786250), (13100, 1536175), (14290, 1408250), (16375, 1228940), (21500, 935995), (22532, 893125), (26875, 748796), (28165, 714500), (28580, 704125), (32750, 614470), (35725, 563300), (53750, 374398), (56330, 357250), (61447, 327500), (65500, 307235), (71450, 281650), (81875, 245788), (107500, 187199), (112660, 178625), (122894, 163750), (140825, 142900)]