20864340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:622

約数の個数: 144

約数和(自身を含む): 74954880

約数和(自身を除く): 54090540

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 58, 60, 63, 70, 84, 87, 90, 105, 116, 126, 140, 145, 174, 180, 203, 210, 252, 261, 290, 315, 348, 406, 420, 435, 522, 571, 580, 609, 630, 812, 870, 1015, 1044, 1142, 1218, 1260, 1305, 1713, 1740, 1827, 2030, 2284, 2436, 2610, 2855, 3045, 3426, 3654, 3997, 4060, 5139, 5220, 5710, 6090, 6852, 7308, 7994, 8565, 9135, 10278, 11420, 11991, 12180, 15988, 16559, 17130, 18270, 19985, 20556, 23982, 25695, 33118, 34260, 35973, 36540, 39970, 47964, 49677, 51390, 59955, 66236, 71946, 79940, 82795, 99354, 102780, 115913, 119910, 143892, 149031, 165590, 179865, 198708, 231826, 239820, 248385, 298062, 331180, 347739, 359730, 463652, 496770, 579565, 596124, 695478, 719460, 745155, 993540, 1043217, 1159130, 1390956, 1490310, 1738695, 2086434, 2318260, 2980620, 3477390, 4172868, 5216085, 6954780, 10432170, 20864340]

約数ペア:

[(1, 20864340), (2, 10432170), (3, 6954780), (4, 5216085), (5, 4172868), (6, 3477390), (7, 2980620), (9, 2318260), (10, 2086434), (12, 1738695), (14, 1490310), (15, 1390956), (18, 1159130), (20, 1043217), (21, 993540), (28, 745155), (29, 719460), (30, 695478), (35, 596124), (36, 579565), (42, 496770), (45, 463652), (58, 359730), (60, 347739), (63, 331180), (70, 298062), (84, 248385), (87, 239820), (90, 231826), (105, 198708), (116, 179865), (126, 165590), (140, 149031), (145, 143892), (174, 119910), (180, 115913), (203, 102780), (210, 99354), (252, 82795), (261, 79940), (290, 71946), (315, 66236), (348, 59955), (406, 51390), (420, 49677), (435, 47964), (522, 39970), (571, 36540), (580, 35973), (609, 34260), (630, 33118), (812, 25695), (870, 23982), (1015, 20556), (1044, 19985), (1142, 18270), (1218, 17130), (1260, 16559), (1305, 15988), (1713, 12180), (1740, 11991), (1827, 11420), (2030, 10278), (2284, 9135), (2436, 8565), (2610, 7994), (2855, 7308), (3045, 6852), (3426, 6090), (3654, 5710), (3997, 5220), (4060, 5139)]