21219888

素因数分解:

$2^4\times 3^1\times {\mathrm{653}}^1\times {\mathrm{677}}^1$

素因数の和:1341

約数の個数: 40

約数和(自身を含む): 54983088

約数和(自身を除く): 33763200

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 653, 677, 1306, 1354, 1959, 2031, 2612, 2708, 3918, 4062, 5224, 5416, 7836, 8124, 10448, 10832, 15672, 16248, 31344, 32496, 442081, 884162, 1326243, 1768324, 2652486, 3536648, 5304972, 7073296, 10609944, 21219888]

約数ペア:

[(1, 21219888), (2, 10609944), (3, 7073296), (4, 5304972), (6, 3536648), (8, 2652486), (12, 1768324), (16, 1326243), (24, 884162), (48, 442081), (653, 32496), (677, 31344), (1306, 16248), (1354, 15672), (1959, 10832), (2031, 10448), (2612, 8124), (2708, 7836), (3918, 5416), (4062, 5224)]