21382920

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1523}}^1$

素因数の和:1556

約数の個数: 128

約数和(自身を含む): 76809600

約数和(自身を除く): 55426680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1523, 1560, 1755, 2340, 2808, 3046, 3510, 4569, 4680, 6092, 7020, 7615, 9138, 12184, 13707, 14040, 15230, 18276, 19799, 22845, 27414, 30460, 36552, 39598, 41121, 45690, 54828, 59397, 60920, 68535, 79196, 82242, 91380, 98995, 109656, 118794, 137070, 158392, 164484, 178191, 182760, 197990, 205605, 237588, 274140, 296985, 328968, 356382, 395980, 411210, 475176, 534573, 548280, 593970, 712764, 791960, 822420, 890955, 1069146, 1187940, 1425528, 1644840, 1781910, 2138292, 2375880, 2672865, 3563820, 4276584, 5345730, 7127640, 10691460, 21382920]

約数ペア:

[(1, 21382920), (2, 10691460), (3, 7127640), (4, 5345730), (5, 4276584), (6, 3563820), (8, 2672865), (9, 2375880), (10, 2138292), (12, 1781910), (13, 1644840), (15, 1425528), (18, 1187940), (20, 1069146), (24, 890955), (26, 822420), (27, 791960), (30, 712764), (36, 593970), (39, 548280), (40, 534573), (45, 475176), (52, 411210), (54, 395980), (60, 356382), (65, 328968), (72, 296985), (78, 274140), (90, 237588), (104, 205605), (108, 197990), (117, 182760), (120, 178191), (130, 164484), (135, 158392), (156, 137070), (180, 118794), (195, 109656), (216, 98995), (234, 91380), (260, 82242), (270, 79196), (312, 68535), (351, 60920), (360, 59397), (390, 54828), (468, 45690), (520, 41121), (540, 39598), (585, 36552), (702, 30460), (780, 27414), (936, 22845), (1080, 19799), (1170, 18276), (1404, 15230), (1523, 14040), (1560, 13707), (1755, 12184), (2340, 9138), (2808, 7615), (3046, 7020), (3510, 6092), (4569, 4680)]