28881720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:254

約数の個数: 192

約数和(自身を含む): 109437120

約数和(自身を除く): 80555400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 73, 84, 90, 105, 120, 126, 140, 146, 157, 168, 180, 210, 219, 252, 280, 292, 314, 315, 360, 365, 420, 438, 471, 504, 511, 584, 628, 630, 657, 730, 785, 840, 876, 942, 1022, 1095, 1099, 1256, 1260, 1314, 1413, 1460, 1533, 1570, 1752, 1884, 2044, 2190, 2198, 2355, 2520, 2555, 2628, 2826, 2920, 3066, 3140, 3285, 3297, 3768, 4088, 4380, 4396, 4599, 4710, 5110, 5256, 5495, 5652, 6132, 6280, 6570, 6594, 7065, 7665, 8760, 8792, 9198, 9420, 9891, 10220, 10990, 11304, 11461, 12264, 13140, 13188, 14130, 15330, 16485, 18396, 18840, 19782, 20440, 21980, 22922, 22995, 26280, 26376, 28260, 30660, 32970, 34383, 36792, 39564, 43960, 45844, 45990, 49455, 56520, 57305, 61320, 65940, 68766, 79128, 80227, 91688, 91980, 98910, 103149, 114610, 131880, 137532, 160454, 171915, 183960, 197820, 206298, 229220, 240681, 275064, 320908, 343830, 395640, 401135, 412596, 458440, 481362, 515745, 641816, 687660, 722043, 802270, 825192, 962724, 1031490, 1203405, 1375320, 1444086, 1604540, 1925448, 2062980, 2406810, 2888172, 3209080, 3610215, 4125960, 4813620, 5776344, 7220430, 9627240, 14440860, 28881720]

約数ペア:

[(1, 28881720), (2, 14440860), (3, 9627240), (4, 7220430), (5, 5776344), (6, 4813620), (7, 4125960), (8, 3610215), (9, 3209080), (10, 2888172), (12, 2406810), (14, 2062980), (15, 1925448), (18, 1604540), (20, 1444086), (21, 1375320), (24, 1203405), (28, 1031490), (30, 962724), (35, 825192), (36, 802270), (40, 722043), (42, 687660), (45, 641816), (56, 515745), (60, 481362), (63, 458440), (70, 412596), (72, 401135), (73, 395640), (84, 343830), (90, 320908), (105, 275064), (120, 240681), (126, 229220), (140, 206298), (146, 197820), (157, 183960), (168, 171915), (180, 160454), (210, 137532), (219, 131880), (252, 114610), (280, 103149), (292, 98910), (314, 91980), (315, 91688), (360, 80227), (365, 79128), (420, 68766), (438, 65940), (471, 61320), (504, 57305), (511, 56520), (584, 49455), (628, 45990), (630, 45844), (657, 43960), (730, 39564), (785, 36792), (840, 34383), (876, 32970), (942, 30660), (1022, 28260), (1095, 26376), (1099, 26280), (1256, 22995), (1260, 22922), (1314, 21980), (1413, 20440), (1460, 19782), (1533, 18840), (1570, 18396), (1752, 16485), (1884, 15330), (2044, 14130), (2190, 13188), (2198, 13140), (2355, 12264), (2520, 11461), (2555, 11304), (2628, 10990), (2826, 10220), (2920, 9891), (3066, 9420), (3140, 9198), (3285, 8792), (3297, 8760), (3768, 7665), (4088, 7065), (4380, 6594), (4396, 6570), (4599, 6280), (4710, 6132), (5110, 5652), (5256, 5495)]