281265840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{390647}}^1$

素因数の和:390666

約数の個数: 60

約数和(自身を含む): 944586864

約数和(自身を除く): 663321024

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 390647, 781294, 1171941, 1562588, 1953235, 2343882, 3125176, 3515823, 3906470, 4687764, 5859705, 6250352, 7031646, 7812940, 9375528, 11719410, 14063292, 15625880, 17579115, 18751056, 23438820, 28126584, 31251760, 35158230, 46877640, 56253168, 70316460, 93755280, 140632920, 281265840]

約数ペア:

[(1, 281265840), (2, 140632920), (3, 93755280), (4, 70316460), (5, 56253168), (6, 46877640), (8, 35158230), (9, 31251760), (10, 28126584), (12, 23438820), (15, 18751056), (16, 17579115), (18, 15625880), (20, 14063292), (24, 11719410), (30, 9375528), (36, 7812940), (40, 7031646), (45, 6250352), (48, 5859705), (60, 4687764), (72, 3906470), (80, 3515823), (90, 3125176), (120, 2343882), (144, 1953235), (180, 1562588), (240, 1171941), (360, 781294), (720, 390647)]