21963965

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 29140992

約数和(自身を除く): 7177027

約数列:

[1, 5, 23, 31, 61, 101, 115, 155, 305, 505, 713, 1403, 1891, 2323, 3131, 3565, 6161, 7015, 9455, 11615, 15655, 30805, 43493, 72013, 141703, 190991, 217465, 360065, 708515, 954955, 4392793, 21963965]

約数ペア:

[(1, 21963965), (5, 4392793), (23, 954955), (31, 708515), (61, 360065), (101, 217465), (115, 190991), (155, 141703), (305, 72013), (505, 43493), (713, 30805), (1403, 15655), (1891, 11615), (2323, 9455), (3131, 7015), (3565, 6161)]