20571768

素因数分解:

$2^3\times 3^2\times 7^5\times {\mathrm{17}}^1$

素因数の和:64

約数の個数: 144

約数和(自身を含む): 68824080

約数和(自身を除く): 48252312

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 17, 18, 21, 24, 28, 34, 36, 42, 49, 51, 56, 63, 68, 72, 84, 98, 102, 119, 126, 136, 147, 153, 168, 196, 204, 238, 252, 294, 306, 343, 357, 392, 408, 441, 476, 504, 588, 612, 686, 714, 833, 882, 952, 1029, 1071, 1176, 1224, 1372, 1428, 1666, 1764, 2058, 2142, 2401, 2499, 2744, 2856, 3087, 3332, 3528, 4116, 4284, 4802, 4998, 5831, 6174, 6664, 7203, 7497, 8232, 8568, 9604, 9996, 11662, 12348, 14406, 14994, 16807, 17493, 19208, 19992, 21609, 23324, 24696, 28812, 29988, 33614, 34986, 40817, 43218, 46648, 50421, 52479, 57624, 59976, 67228, 69972, 81634, 86436, 100842, 104958, 122451, 134456, 139944, 151263, 163268, 172872, 201684, 209916, 244902, 285719, 302526, 326536, 367353, 403368, 419832, 489804, 571438, 605052, 734706, 857157, 979608, 1142876, 1210104, 1469412, 1714314, 2285752, 2571471, 2938824, 3428628, 5142942, 6857256, 10285884, 20571768]

約数ペア:

[(1, 20571768), (2, 10285884), (3, 6857256), (4, 5142942), (6, 3428628), (7, 2938824), (8, 2571471), (9, 2285752), (12, 1714314), (14, 1469412), (17, 1210104), (18, 1142876), (21, 979608), (24, 857157), (28, 734706), (34, 605052), (36, 571438), (42, 489804), (49, 419832), (51, 403368), (56, 367353), (63, 326536), (68, 302526), (72, 285719), (84, 244902), (98, 209916), (102, 201684), (119, 172872), (126, 163268), (136, 151263), (147, 139944), (153, 134456), (168, 122451), (196, 104958), (204, 100842), (238, 86436), (252, 81634), (294, 69972), (306, 67228), (343, 59976), (357, 57624), (392, 52479), (408, 50421), (441, 46648), (476, 43218), (504, 40817), (588, 34986), (612, 33614), (686, 29988), (714, 28812), (833, 24696), (882, 23324), (952, 21609), (1029, 19992), (1071, 19208), (1176, 17493), (1224, 16807), (1372, 14994), (1428, 14406), (1666, 12348), (1764, 11662), (2058, 9996), (2142, 9604), (2401, 8568), (2499, 8232), (2744, 7497), (2856, 7203), (3087, 6664), (3332, 6174), (3528, 5831), (4116, 4998), (4284, 4802)]