640959120

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{890221}}^1$

素因数の和:890240

約数の個数: 60

約数和(自身を含む): 2152556796

約数和(自身を除く): 1511597676

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, 890221, 1780442, 2670663, 3560884, 4451105, 5341326, 7121768, 8011989, 8902210, 10682652, 13353315, 14243536, 16023978, 17804420, 21365304, 26706630, 32047956, 35608840, 40059945, 42730608, 53413260, 64095912, 71217680, 80119890, 106826520, 128191824, 160239780, 213653040, 320479560, 640959120]

約数ペア:

[(1, 640959120), (2, 320479560), (3, 213653040), (4, 160239780), (5, 128191824), (6, 106826520), (8, 80119890), (9, 71217680), (10, 64095912), (12, 53413260), (15, 42730608), (16, 40059945), (18, 35608840), (20, 32047956), (24, 26706630), (30, 21365304), (36, 17804420), (40, 16023978), (45, 14243536), (48, 13353315), (60, 10682652), (72, 8902210), (80, 8011989), (90, 7121768), (120, 5341326), (144, 4451105), (180, 3560884), (240, 2670663), (360, 1780442), (720, 890221)]