20189115

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{463}}^1$

素因数の和:513

約数の個数: 64

約数和(自身を含む): 40089600

約数和(自身を除く): 19900485

約数列:

[1, 3, 5, 9, 15, 17, 19, 27, 45, 51, 57, 85, 95, 135, 153, 171, 255, 285, 323, 459, 463, 513, 765, 855, 969, 1389, 1615, 2295, 2315, 2565, 2907, 4167, 4845, 6945, 7871, 8721, 8797, 12501, 14535, 20835, 23613, 26391, 39355, 43605, 43985, 62505, 70839, 79173, 118065, 131955, 149549, 212517, 237519, 354195, 395865, 448647, 747745, 1062585, 1187595, 1345941, 2243235, 4037823, 6729705, 20189115]

約数ペア:

[(1, 20189115), (3, 6729705), (5, 4037823), (9, 2243235), (15, 1345941), (17, 1187595), (19, 1062585), (27, 747745), (45, 448647), (51, 395865), (57, 354195), (85, 237519), (95, 212517), (135, 149549), (153, 131955), (171, 118065), (255, 79173), (285, 70839), (323, 62505), (459, 43985), (463, 43605), (513, 39355), (765, 26391), (855, 23613), (969, 20835), (1389, 14535), (1615, 12501), (2295, 8797), (2315, 8721), (2565, 7871), (2907, 6945), (4167, 4845)]