20528020880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{937}}^1$

素因数の和:1237

約数の個数: 160

約数和(自身を含む): 51440145120

約数和(自身を除く): 30912124240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 89, 136, 170, 178, 181, 272, 340, 356, 362, 445, 680, 712, 724, 890, 905, 937, 1360, 1424, 1448, 1513, 1780, 1810, 1874, 2896, 3026, 3077, 3560, 3620, 3748, 4685, 6052, 6154, 7120, 7240, 7496, 7565, 9370, 12104, 12308, 14480, 14992, 15130, 15385, 15929, 16109, 18740, 24208, 24616, 30260, 30770, 31858, 32218, 37480, 49232, 60520, 61540, 63716, 64436, 74960, 79645, 80545, 83393, 121040, 123080, 127432, 128872, 159290, 161090, 166786, 169597, 246160, 254864, 257744, 273853, 318580, 322180, 333572, 339194, 416965, 547706, 637160, 644360, 667144, 678388, 833930, 847985, 1095412, 1274320, 1288720, 1334288, 1356776, 1369265, 1417681, 1667860, 1695970, 2190824, 2713552, 2738530, 2835362, 2883149, 3335720, 3391940, 4381648, 5477060, 5670724, 5766298, 6671440, 6783880, 7088405, 10954120, 11341448, 11532596, 13567760, 14176810, 14415745, 15094133, 21908240, 22682896, 23065192, 28353620, 28831490, 30188266, 46130384, 56707240, 57662980, 60376532, 75470665, 113414480, 115325960, 120753064, 150941330, 230651920, 241506128, 256600261, 301882660, 513200522, 603765320, 1026401044, 1207530640, 1283001305, 2052802088, 2566002610, 4105604176, 5132005220, 10264010440, 20528020880]

約数ペア:

[(1, 20528020880), (2, 10264010440), (4, 5132005220), (5, 4105604176), (8, 2566002610), (10, 2052802088), (16, 1283001305), (17, 1207530640), (20, 1026401044), (34, 603765320), (40, 513200522), (68, 301882660), (80, 256600261), (85, 241506128), (89, 230651920), (136, 150941330), (170, 120753064), (178, 115325960), (181, 113414480), (272, 75470665), (340, 60376532), (356, 57662980), (362, 56707240), (445, 46130384), (680, 30188266), (712, 28831490), (724, 28353620), (890, 23065192), (905, 22682896), (937, 21908240), (1360, 15094133), (1424, 14415745), (1448, 14176810), (1513, 13567760), (1780, 11532596), (1810, 11341448), (1874, 10954120), (2896, 7088405), (3026, 6783880), (3077, 6671440), (3560, 5766298), (3620, 5670724), (3748, 5477060), (4685, 4381648), (6052, 3391940), (6154, 3335720), (7120, 2883149), (7240, 2835362), (7496, 2738530), (7565, 2713552), (9370, 2190824), (12104, 1695970), (12308, 1667860), (14480, 1417681), (14992, 1369265), (15130, 1356776), (15385, 1334288), (15929, 1288720), (16109, 1274320), (18740, 1095412), (24208, 847985), (24616, 833930), (30260, 678388), (30770, 667144), (31858, 644360), (32218, 637160), (37480, 547706), (49232, 416965), (60520, 339194), (61540, 333572), (63716, 322180), (64436, 318580), (74960, 273853), (79645, 257744), (80545, 254864), (83393, 246160), (121040, 169597), (123080, 166786), (127432, 161090), (128872, 159290)]