16640416

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:234

約数の個数: 72

約数和(自身を含む): 37769004

約数和(自身を除く): 21128588

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 169, 181, 208, 221, 272, 338, 362, 416, 442, 544, 676, 724, 884, 1352, 1448, 1768, 2353, 2704, 2873, 2896, 3077, 3536, 4706, 5408, 5746, 5792, 6154, 7072, 9412, 11492, 12308, 18824, 22984, 24616, 30589, 37648, 40001, 45968, 49232, 61178, 75296, 80002, 91936, 98464, 122356, 160004, 244712, 320008, 489424, 520013, 640016, 978848, 1040026, 1280032, 2080052, 4160104, 8320208, 16640416]

約数ペア:

[(1, 16640416), (2, 8320208), (4, 4160104), (8, 2080052), (13, 1280032), (16, 1040026), (17, 978848), (26, 640016), (32, 520013), (34, 489424), (52, 320008), (68, 244712), (104, 160004), (136, 122356), (169, 98464), (181, 91936), (208, 80002), (221, 75296), (272, 61178), (338, 49232), (362, 45968), (416, 40001), (442, 37648), (544, 30589), (676, 24616), (724, 22984), (884, 18824), (1352, 12308), (1448, 11492), (1768, 9412), (2353, 7072), (2704, 6154), (2873, 5792), (2896, 5746), (3077, 5408), (3536, 4706)]