21297120

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3413}}^1$

素因数の和:3444

約数の個数: 96

約数和(自身を含む): 72267552

約数和(自身を除く): 50970432

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 78, 80, 96, 104, 120, 130, 156, 160, 195, 208, 240, 260, 312, 390, 416, 480, 520, 624, 780, 1040, 1248, 1560, 2080, 3120, 3413, 6240, 6826, 10239, 13652, 17065, 20478, 27304, 34130, 40956, 44369, 51195, 54608, 68260, 81912, 88738, 102390, 109216, 133107, 136520, 163824, 177476, 204780, 221845, 266214, 273040, 327648, 354952, 409560, 443690, 532428, 546080, 665535, 709904, 819120, 887380, 1064856, 1331070, 1419808, 1638240, 1774760, 2129712, 2662140, 3549520, 4259424, 5324280, 7099040, 10648560, 21297120]

約数ペア:

[(1, 21297120), (2, 10648560), (3, 7099040), (4, 5324280), (5, 4259424), (6, 3549520), (8, 2662140), (10, 2129712), (12, 1774760), (13, 1638240), (15, 1419808), (16, 1331070), (20, 1064856), (24, 887380), (26, 819120), (30, 709904), (32, 665535), (39, 546080), (40, 532428), (48, 443690), (52, 409560), (60, 354952), (65, 327648), (78, 273040), (80, 266214), (96, 221845), (104, 204780), (120, 177476), (130, 163824), (156, 136520), (160, 133107), (195, 109216), (208, 102390), (240, 88738), (260, 81912), (312, 68260), (390, 54608), (416, 51195), (480, 44369), (520, 40956), (624, 34130), (780, 27304), (1040, 20478), (1248, 17065), (1560, 13652), (2080, 10239), (3120, 6826), (3413, 6240)]