20503440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28477}}^1$

素因数の和:28496

約数の個数: 60

約数和(自身を含む): 68859804

約数和(自身を除く): 48356364

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, 28477, 56954, 85431, 113908, 142385, 170862, 227816, 256293, 284770, 341724, 427155, 455632, 512586, 569540, 683448, 854310, 1025172, 1139080, 1281465, 1366896, 1708620, 2050344, 2278160, 2562930, 3417240, 4100688, 5125860, 6834480, 10251720, 20503440]

約数ペア:

[(1, 20503440), (2, 10251720), (3, 6834480), (4, 5125860), (5, 4100688), (6, 3417240), (8, 2562930), (9, 2278160), (10, 2050344), (12, 1708620), (15, 1366896), (16, 1281465), (18, 1139080), (20, 1025172), (24, 854310), (30, 683448), (36, 569540), (40, 512586), (45, 455632), (48, 427155), (60, 341724), (72, 284770), (80, 256293), (90, 227816), (120, 170862), (144, 142385), (180, 113908), (240, 85431), (360, 56954), (720, 28477)]