21227520

素因数分解:

$2^{11}\times 3^1\times 5^1\times {\mathrm{691}}^1$

素因数の和:721

約数の個数: 96

約数和(自身を含む): 68009760

約数和(自身を除く): 46782240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 691, 768, 960, 1024, 1280, 1382, 1536, 1920, 2048, 2073, 2560, 2764, 3072, 3455, 3840, 4146, 5120, 5528, 6144, 6910, 7680, 8292, 10240, 10365, 11056, 13820, 15360, 16584, 20730, 22112, 27640, 30720, 33168, 41460, 44224, 55280, 66336, 82920, 88448, 110560, 132672, 165840, 176896, 221120, 265344, 331680, 353792, 442240, 530688, 663360, 707584, 884480, 1061376, 1326720, 1415168, 1768960, 2122752, 2653440, 3537920, 4245504, 5306880, 7075840, 10613760, 21227520]

約数ペア:

[(1, 21227520), (2, 10613760), (3, 7075840), (4, 5306880), (5, 4245504), (6, 3537920), (8, 2653440), (10, 2122752), (12, 1768960), (15, 1415168), (16, 1326720), (20, 1061376), (24, 884480), (30, 707584), (32, 663360), (40, 530688), (48, 442240), (60, 353792), (64, 331680), (80, 265344), (96, 221120), (120, 176896), (128, 165840), (160, 132672), (192, 110560), (240, 88448), (256, 82920), (320, 66336), (384, 55280), (480, 44224), (512, 41460), (640, 33168), (691, 30720), (768, 27640), (960, 22112), (1024, 20730), (1280, 16584), (1382, 15360), (1536, 13820), (1920, 11056), (2048, 10365), (2073, 10240), (2560, 8292), (2764, 7680), (3072, 6910), (3455, 6144), (3840, 5528), (4146, 5120)]