16505775

素因数分解:

$3^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:68

約数の個数: 144

約数和(自身を含む): 37914240

約数和(自身を除く): 21408465

約数列:

[1, 3, 5, 9, 11, 13, 15, 19, 25, 27, 33, 39, 45, 55, 57, 65, 75, 81, 95, 99, 117, 135, 143, 165, 171, 195, 209, 225, 243, 247, 275, 285, 297, 325, 351, 405, 429, 475, 495, 513, 585, 627, 675, 715, 741, 825, 855, 891, 975, 1045, 1053, 1215, 1235, 1287, 1425, 1485, 1539, 1755, 1881, 2025, 2145, 2223, 2475, 2565, 2673, 2717, 2925, 3135, 3159, 3575, 3705, 3861, 4275, 4455, 4617, 5225, 5265, 5643, 6075, 6175, 6435, 6669, 7425, 7695, 8151, 8775, 9405, 10725, 11115, 11583, 12825, 13365, 13585, 15675, 15795, 16929, 18525, 19305, 20007, 22275, 23085, 24453, 26325, 28215, 32175, 33345, 34749, 38475, 40755, 47025, 50787, 55575, 57915, 60021, 66825, 67925, 73359, 78975, 84645, 96525, 100035, 115425, 122265, 141075, 166725, 173745, 203775, 220077, 253935, 289575, 300105, 366795, 423225, 500175, 611325, 660231, 868725, 1100385, 1269675, 1500525, 1833975, 3301155, 5501925, 16505775]

約数ペア:

[(1, 16505775), (3, 5501925), (5, 3301155), (9, 1833975), (11, 1500525), (13, 1269675), (15, 1100385), (19, 868725), (25, 660231), (27, 611325), (33, 500175), (39, 423225), (45, 366795), (55, 300105), (57, 289575), (65, 253935), (75, 220077), (81, 203775), (95, 173745), (99, 166725), (117, 141075), (135, 122265), (143, 115425), (165, 100035), (171, 96525), (195, 84645), (209, 78975), (225, 73359), (243, 67925), (247, 66825), (275, 60021), (285, 57915), (297, 55575), (325, 50787), (351, 47025), (405, 40755), (429, 38475), (475, 34749), (495, 33345), (513, 32175), (585, 28215), (627, 26325), (675, 24453), (715, 23085), (741, 22275), (825, 20007), (855, 19305), (891, 18525), (975, 16929), (1045, 15795), (1053, 15675), (1215, 13585), (1235, 13365), (1287, 12825), (1425, 11583), (1485, 11115), (1539, 10725), (1755, 9405), (1881, 8775), (2025, 8151), (2145, 7695), (2223, 7425), (2475, 6669), (2565, 6435), (2673, 6175), (2717, 6075), (2925, 5643), (3135, 5265), (3159, 5225), (3575, 4617), (3705, 4455), (3861, 4275)]