21466250

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1321}}^1$

素因数の和:1356

約数の個数: 40

約数和(自身を含む): 43364244

約数和(自身を除く): 21897994

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1321, 1625, 2642, 3250, 6605, 8125, 13210, 16250, 17173, 33025, 34346, 66050, 85865, 165125, 171730, 330250, 429325, 825625, 858650, 1651250, 2146625, 4293250, 10733125, 21466250]

約数ペア:

[(1, 21466250), (2, 10733125), (5, 4293250), (10, 2146625), (13, 1651250), (25, 858650), (26, 825625), (50, 429325), (65, 330250), (125, 171730), (130, 165125), (250, 85865), (325, 66050), (625, 34346), (650, 33025), (1250, 17173), (1321, 16250), (1625, 13210), (2642, 8125), (3250, 6605)]