20163856875

素因数分解:

$3^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{641}}^1\times {\mathrm{883}}^1$

素因数の和:1566

約数の個数: 80

約数和(自身を含む): 35459149440

約数和(自身を除く): 15295292565

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 125, 285, 375, 475, 625, 641, 883, 1425, 1875, 1923, 2375, 2649, 3205, 4415, 7125, 9615, 11875, 12179, 13245, 16025, 16777, 22075, 35625, 36537, 48075, 50331, 60895, 66225, 80125, 83885, 110375, 182685, 240375, 251655, 304475, 331125, 400625, 419425, 551875, 566003, 913425, 1201875, 1258275, 1522375, 1655625, 1698009, 2097125, 2830015, 4567125, 6291375, 7611875, 8490045, 10485625, 10754057, 14150075, 22835625, 31456875, 32262171, 42450225, 53770285, 70750375, 161310855, 212251125, 268851425, 353751875, 806554275, 1061255625, 1344257125, 4032771375, 6721285625, 20163856875]

約数ペア:

[(1, 20163856875), (3, 6721285625), (5, 4032771375), (15, 1344257125), (19, 1061255625), (25, 806554275), (57, 353751875), (75, 268851425), (95, 212251125), (125, 161310855), (285, 70750375), (375, 53770285), (475, 42450225), (625, 32262171), (641, 31456875), (883, 22835625), (1425, 14150075), (1875, 10754057), (1923, 10485625), (2375, 8490045), (2649, 7611875), (3205, 6291375), (4415, 4567125), (7125, 2830015), (9615, 2097125), (11875, 1698009), (12179, 1655625), (13245, 1522375), (16025, 1258275), (16777, 1201875), (22075, 913425), (35625, 566003), (36537, 551875), (48075, 419425), (50331, 400625), (60895, 331125), (66225, 304475), (80125, 251655), (83885, 240375), (110375, 182685)]