28780440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{971}}^1$

素因数の和:1017

約数の個数: 128

約数和(自身を含む): 97977600

約数和(自身を除く): 69197160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 52, 57, 60, 65, 76, 78, 95, 104, 114, 120, 130, 152, 156, 190, 195, 228, 247, 260, 285, 312, 380, 390, 456, 494, 520, 570, 741, 760, 780, 971, 988, 1140, 1235, 1482, 1560, 1942, 1976, 2280, 2470, 2913, 2964, 3705, 3884, 4855, 4940, 5826, 5928, 7410, 7768, 9710, 9880, 11652, 12623, 14565, 14820, 18449, 19420, 23304, 25246, 29130, 29640, 36898, 37869, 38840, 50492, 55347, 58260, 63115, 73796, 75738, 92245, 100984, 110694, 116520, 126230, 147592, 151476, 184490, 189345, 221388, 239837, 252460, 276735, 302952, 368980, 378690, 442776, 479674, 504920, 553470, 719511, 737960, 757380, 959348, 1106940, 1199185, 1439022, 1514760, 1918696, 2213880, 2398370, 2878044, 3597555, 4796740, 5756088, 7195110, 9593480, 14390220, 28780440]

約数ペア:

[(1, 28780440), (2, 14390220), (3, 9593480), (4, 7195110), (5, 5756088), (6, 4796740), (8, 3597555), (10, 2878044), (12, 2398370), (13, 2213880), (15, 1918696), (19, 1514760), (20, 1439022), (24, 1199185), (26, 1106940), (30, 959348), (38, 757380), (39, 737960), (40, 719511), (52, 553470), (57, 504920), (60, 479674), (65, 442776), (76, 378690), (78, 368980), (95, 302952), (104, 276735), (114, 252460), (120, 239837), (130, 221388), (152, 189345), (156, 184490), (190, 151476), (195, 147592), (228, 126230), (247, 116520), (260, 110694), (285, 100984), (312, 92245), (380, 75738), (390, 73796), (456, 63115), (494, 58260), (520, 55347), (570, 50492), (741, 38840), (760, 37869), (780, 36898), (971, 29640), (988, 29130), (1140, 25246), (1235, 23304), (1482, 19420), (1560, 18449), (1942, 14820), (1976, 14565), (2280, 12623), (2470, 11652), (2913, 9880), (2964, 9710), (3705, 7768), (3884, 7410), (4855, 5928), (4940, 5826)]