21551670

素因数分解:

$2^1\times 3^5\times 5^1\times 7^2\times {\mathrm{181}}^1$

素因数の和:217

約数の個数: 144

約数和(自身を含む): 67970448

約数和(自身を除く): 46418778

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 81, 90, 98, 105, 126, 135, 147, 162, 181, 189, 210, 243, 245, 270, 294, 315, 362, 378, 405, 441, 486, 490, 543, 567, 630, 735, 810, 882, 905, 945, 1086, 1134, 1215, 1267, 1323, 1470, 1629, 1701, 1810, 1890, 2205, 2430, 2534, 2646, 2715, 2835, 3258, 3402, 3801, 3969, 4410, 4887, 5430, 5670, 6335, 6615, 7602, 7938, 8145, 8505, 8869, 9774, 11403, 11907, 12670, 13230, 14661, 16290, 17010, 17738, 19005, 19845, 22806, 23814, 24435, 26607, 29322, 34209, 38010, 39690, 43983, 44345, 48870, 53214, 57015, 59535, 68418, 73305, 79821, 87966, 88690, 102627, 114030, 119070, 133035, 146610, 159642, 171045, 205254, 219915, 239463, 266070, 307881, 342090, 399105, 439830, 478926, 513135, 615762, 718389, 798210, 1026270, 1197315, 1436778, 1539405, 2155167, 2394630, 3078810, 3591945, 4310334, 7183890, 10775835, 21551670]

約数ペア:

[(1, 21551670), (2, 10775835), (3, 7183890), (5, 4310334), (6, 3591945), (7, 3078810), (9, 2394630), (10, 2155167), (14, 1539405), (15, 1436778), (18, 1197315), (21, 1026270), (27, 798210), (30, 718389), (35, 615762), (42, 513135), (45, 478926), (49, 439830), (54, 399105), (63, 342090), (70, 307881), (81, 266070), (90, 239463), (98, 219915), (105, 205254), (126, 171045), (135, 159642), (147, 146610), (162, 133035), (181, 119070), (189, 114030), (210, 102627), (243, 88690), (245, 87966), (270, 79821), (294, 73305), (315, 68418), (362, 59535), (378, 57015), (405, 53214), (441, 48870), (486, 44345), (490, 43983), (543, 39690), (567, 38010), (630, 34209), (735, 29322), (810, 26607), (882, 24435), (905, 23814), (945, 22806), (1086, 19845), (1134, 19005), (1215, 17738), (1267, 17010), (1323, 16290), (1470, 14661), (1629, 13230), (1701, 12670), (1810, 11907), (1890, 11403), (2205, 9774), (2430, 8869), (2534, 8505), (2646, 8145), (2715, 7938), (2835, 7602), (3258, 6615), (3402, 6335), (3801, 5670), (3969, 5430), (4410, 4887)]