640325760

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{333503}}^1$

素因数の和:333525

約数の個数: 64

約数和(自身を含む): 2041044480

約数和(自身を除く): 1400718720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 333503, 667006, 1000509, 1334012, 1667515, 2001018, 2668024, 3335030, 4002036, 5002545, 5336048, 6670060, 8004072, 10005090, 10672096, 13340120, 16008144, 20010180, 21344192, 26680240, 32016288, 40020360, 42688384, 53360480, 64032576, 80040720, 106720960, 128065152, 160081440, 213441920, 320162880, 640325760]

約数ペア:

[(1, 640325760), (2, 320162880), (3, 213441920), (4, 160081440), (5, 128065152), (6, 106720960), (8, 80040720), (10, 64032576), (12, 53360480), (15, 42688384), (16, 40020360), (20, 32016288), (24, 26680240), (30, 21344192), (32, 20010180), (40, 16008144), (48, 13340120), (60, 10672096), (64, 10005090), (80, 8004072), (96, 6670060), (120, 5336048), (128, 5002545), (160, 4002036), (192, 3335030), (240, 2668024), (320, 2001018), (384, 1667515), (480, 1334012), (640, 1000509), (960, 667006), (1920, 333503)]