20807748

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{257}}^1$

素因数の和:453

約数の個数: 72

約数和(自身を含む): 57192408

約数和(自身を除く): 36384660

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 173, 234, 257, 346, 468, 514, 519, 692, 771, 1028, 1038, 1542, 1557, 2076, 2249, 2313, 3084, 3114, 3341, 4498, 4626, 6228, 6682, 6747, 8996, 9252, 10023, 13364, 13494, 20046, 20241, 26988, 30069, 40092, 40482, 44461, 60138, 80964, 88922, 120276, 133383, 177844, 266766, 400149, 533532, 577993, 800298, 1155986, 1600596, 1733979, 2311972, 3467958, 5201937, 6935916, 10403874, 20807748]

約数ペア:

[(1, 20807748), (2, 10403874), (3, 6935916), (4, 5201937), (6, 3467958), (9, 2311972), (12, 1733979), (13, 1600596), (18, 1155986), (26, 800298), (36, 577993), (39, 533532), (52, 400149), (78, 266766), (117, 177844), (156, 133383), (173, 120276), (234, 88922), (257, 80964), (346, 60138), (468, 44461), (514, 40482), (519, 40092), (692, 30069), (771, 26988), (1028, 20241), (1038, 20046), (1542, 13494), (1557, 13364), (2076, 10023), (2249, 9252), (2313, 8996), (3084, 6747), (3114, 6682), (3341, 6228), (4498, 4626)]