1991238060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{239}}^2$

素因数の和:580

約数の個数: 144

約数和(自身を含む): 6475827456

約数和(自身を除く): 4484589396

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 83, 84, 105, 140, 166, 210, 239, 249, 332, 415, 420, 478, 498, 581, 717, 830, 956, 996, 1162, 1195, 1245, 1434, 1660, 1673, 1743, 2324, 2390, 2490, 2868, 2905, 3346, 3486, 3585, 4780, 4980, 5019, 5810, 6692, 6972, 7170, 8365, 8715, 10038, 11620, 14340, 16730, 17430, 19837, 20076, 25095, 33460, 34860, 39674, 50190, 57121, 59511, 79348, 99185, 100380, 114242, 119022, 138859, 171363, 198370, 228484, 238044, 277718, 285605, 297555, 342726, 396740, 399847, 416577, 555436, 571210, 595110, 685452, 694295, 799694, 833154, 856815, 1142420, 1190220, 1199541, 1388590, 1599388, 1666308, 1713630, 1999235, 2082885, 2399082, 2777180, 3427260, 3998470, 4165770, 4741043, 4798164, 5997705, 7996940, 8331540, 9482086, 11995410, 14223129, 18964172, 23705215, 23990820, 28446258, 33187301, 47410430, 56892516, 66374602, 71115645, 94820860, 99561903, 132749204, 142231290, 165936505, 199123806, 284462580, 331873010, 398247612, 497809515, 663746020, 995619030, 1991238060]

約数ペア:

[(1, 1991238060), (2, 995619030), (3, 663746020), (4, 497809515), (5, 398247612), (6, 331873010), (7, 284462580), (10, 199123806), (12, 165936505), (14, 142231290), (15, 132749204), (20, 99561903), (21, 94820860), (28, 71115645), (30, 66374602), (35, 56892516), (42, 47410430), (60, 33187301), (70, 28446258), (83, 23990820), (84, 23705215), (105, 18964172), (140, 14223129), (166, 11995410), (210, 9482086), (239, 8331540), (249, 7996940), (332, 5997705), (415, 4798164), (420, 4741043), (478, 4165770), (498, 3998470), (581, 3427260), (717, 2777180), (830, 2399082), (956, 2082885), (996, 1999235), (1162, 1713630), (1195, 1666308), (1245, 1599388), (1434, 1388590), (1660, 1199541), (1673, 1190220), (1743, 1142420), (2324, 856815), (2390, 833154), (2490, 799694), (2868, 694295), (2905, 685452), (3346, 595110), (3486, 571210), (3585, 555436), (4780, 416577), (4980, 399847), (5019, 396740), (5810, 342726), (6692, 297555), (6972, 285605), (7170, 277718), (8365, 238044), (8715, 228484), (10038, 198370), (11620, 171363), (14340, 138859), (16730, 119022), (17430, 114242), (19837, 100380), (20076, 99185), (25095, 79348), (33460, 59511), (34860, 57121), (39674, 50190)]