21008260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1$

素因数の和:150

約数の個数: 144

約数和(自身を含む): 59122224

約数和(自身を除く): 38113964

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 49, 52, 65, 68, 70, 85, 91, 97, 98, 119, 130, 140, 170, 182, 194, 196, 221, 238, 245, 260, 340, 364, 388, 442, 455, 476, 485, 490, 595, 637, 679, 833, 884, 910, 970, 980, 1105, 1190, 1261, 1274, 1358, 1547, 1649, 1666, 1820, 1940, 2210, 2380, 2522, 2548, 2716, 3094, 3185, 3298, 3332, 3395, 4165, 4420, 4753, 5044, 6188, 6305, 6370, 6596, 6790, 7735, 8245, 8330, 8827, 9506, 10829, 11543, 12610, 12740, 13580, 15470, 16490, 16660, 17654, 19012, 21437, 21658, 23086, 23765, 25220, 30940, 32980, 35308, 42874, 43316, 44135, 46172, 47530, 54145, 57715, 61789, 80801, 85748, 88270, 95060, 107185, 108290, 115430, 123578, 150059, 161602, 176540, 214370, 216580, 230860, 247156, 300118, 308945, 323204, 404005, 428740, 600236, 617890, 750295, 808010, 1050413, 1235780, 1500590, 1616020, 2100826, 3001180, 4201652, 5252065, 10504130, 21008260]

約数ペア:

[(1, 21008260), (2, 10504130), (4, 5252065), (5, 4201652), (7, 3001180), (10, 2100826), (13, 1616020), (14, 1500590), (17, 1235780), (20, 1050413), (26, 808010), (28, 750295), (34, 617890), (35, 600236), (49, 428740), (52, 404005), (65, 323204), (68, 308945), (70, 300118), (85, 247156), (91, 230860), (97, 216580), (98, 214370), (119, 176540), (130, 161602), (140, 150059), (170, 123578), (182, 115430), (194, 108290), (196, 107185), (221, 95060), (238, 88270), (245, 85748), (260, 80801), (340, 61789), (364, 57715), (388, 54145), (442, 47530), (455, 46172), (476, 44135), (485, 43316), (490, 42874), (595, 35308), (637, 32980), (679, 30940), (833, 25220), (884, 23765), (910, 23086), (970, 21658), (980, 21437), (1105, 19012), (1190, 17654), (1261, 16660), (1274, 16490), (1358, 15470), (1547, 13580), (1649, 12740), (1666, 12610), (1820, 11543), (1940, 10829), (2210, 9506), (2380, 8827), (2522, 8330), (2548, 8245), (2716, 7735), (3094, 6790), (3185, 6596), (3298, 6370), (3332, 6305), (3395, 6188), (4165, 5044), (4420, 4753)]