21591900

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{727}}^1$

素因数の和:761

約数の個数: 144

約数和(自身を含む): 75828480

約数和(自身を除く): 54236580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 27, 30, 33, 36, 44, 45, 50, 54, 55, 60, 66, 75, 90, 99, 100, 108, 110, 132, 135, 150, 165, 180, 198, 220, 225, 270, 275, 297, 300, 330, 396, 450, 495, 540, 550, 594, 660, 675, 727, 825, 900, 990, 1100, 1188, 1350, 1454, 1485, 1650, 1980, 2181, 2475, 2700, 2908, 2970, 3300, 3635, 4362, 4950, 5940, 6543, 7270, 7425, 7997, 8724, 9900, 10905, 13086, 14540, 14850, 15994, 18175, 19629, 21810, 23991, 26172, 29700, 31988, 32715, 36350, 39258, 39985, 43620, 47982, 54525, 65430, 71973, 72700, 78516, 79970, 95964, 98145, 109050, 119955, 130860, 143946, 159940, 163575, 196290, 199925, 215919, 218100, 239910, 287892, 327150, 359865, 392580, 399850, 431838, 479820, 490725, 599775, 654300, 719730, 799700, 863676, 981450, 1079595, 1199550, 1439460, 1799325, 1962900, 2159190, 2399100, 3598650, 4318380, 5397975, 7197300, 10795950, 21591900]

約数ペア:

[(1, 21591900), (2, 10795950), (3, 7197300), (4, 5397975), (5, 4318380), (6, 3598650), (9, 2399100), (10, 2159190), (11, 1962900), (12, 1799325), (15, 1439460), (18, 1199550), (20, 1079595), (22, 981450), (25, 863676), (27, 799700), (30, 719730), (33, 654300), (36, 599775), (44, 490725), (45, 479820), (50, 431838), (54, 399850), (55, 392580), (60, 359865), (66, 327150), (75, 287892), (90, 239910), (99, 218100), (100, 215919), (108, 199925), (110, 196290), (132, 163575), (135, 159940), (150, 143946), (165, 130860), (180, 119955), (198, 109050), (220, 98145), (225, 95964), (270, 79970), (275, 78516), (297, 72700), (300, 71973), (330, 65430), (396, 54525), (450, 47982), (495, 43620), (540, 39985), (550, 39258), (594, 36350), (660, 32715), (675, 31988), (727, 29700), (825, 26172), (900, 23991), (990, 21810), (1100, 19629), (1188, 18175), (1350, 15994), (1454, 14850), (1485, 14540), (1650, 13086), (1980, 10905), (2181, 9900), (2475, 8724), (2700, 7997), (2908, 7425), (2970, 7270), (3300, 6543), (3635, 5940), (4362, 4950)]