400893840

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{185599}}^1$

素因数の和:185621

約数の個数: 80

約数和(自身を含む): 1380864000

約数和(自身を除く): 979970160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 185599, 371198, 556797, 742396, 927995, 1113594, 1484792, 1670391, 1855990, 2227188, 2783985, 2969584, 3340782, 3711980, 4454376, 5011173, 5567970, 6681564, 7423960, 8351955, 8908752, 10022346, 11135940, 13363128, 14847920, 16703910, 20044692, 22271880, 25055865, 26726256, 33407820, 40089384, 44543760, 50111730, 66815640, 80178768, 100223460, 133631280, 200446920, 400893840]

約数ペア:

[(1, 400893840), (2, 200446920), (3, 133631280), (4, 100223460), (5, 80178768), (6, 66815640), (8, 50111730), (9, 44543760), (10, 40089384), (12, 33407820), (15, 26726256), (16, 25055865), (18, 22271880), (20, 20044692), (24, 16703910), (27, 14847920), (30, 13363128), (36, 11135940), (40, 10022346), (45, 8908752), (48, 8351955), (54, 7423960), (60, 6681564), (72, 5567970), (80, 5011173), (90, 4454376), (108, 3711980), (120, 3340782), (135, 2969584), (144, 2783985), (180, 2227188), (216, 1855990), (240, 1670391), (270, 1484792), (360, 1113594), (432, 927995), (540, 742396), (720, 556797), (1080, 371198), (2160, 185599)]