261916720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251843}}^1$

素因数の和:251869

約数の個数: 40

約数和(自身を含む): 655801776

約数和(自身を除く): 393885056

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 251843, 503686, 1007372, 1259215, 2014744, 2518430, 3273959, 4029488, 5036860, 6547918, 10073720, 13095836, 16369795, 20147440, 26191672, 32739590, 52383344, 65479180, 130958360, 261916720]

約数ペア:

[(1, 261916720), (2, 130958360), (4, 65479180), (5, 52383344), (8, 32739590), (10, 26191672), (13, 20147440), (16, 16369795), (20, 13095836), (26, 10073720), (40, 6547918), (52, 5036860), (65, 4029488), (80, 3273959), (104, 2518430), (130, 2014744), (208, 1259215), (260, 1007372), (520, 503686), (1040, 251843)]