21241772

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 42547680

約数和(自身を除く): 21305908

約数列:

[1, 2, 4, 17, 19, 34, 38, 41, 68, 76, 82, 164, 323, 401, 646, 697, 779, 802, 1292, 1394, 1558, 1604, 2788, 3116, 6817, 7619, 13243, 13634, 15238, 16441, 26486, 27268, 30476, 32882, 52972, 65764, 129523, 259046, 279497, 312379, 518092, 558994, 624758, 1117988, 1249516, 5310443, 10620886, 21241772]

約数ペア:

[(1, 21241772), (2, 10620886), (4, 5310443), (17, 1249516), (19, 1117988), (34, 624758), (38, 558994), (41, 518092), (68, 312379), (76, 279497), (82, 259046), (164, 129523), (323, 65764), (401, 52972), (646, 32882), (697, 30476), (779, 27268), (802, 26486), (1292, 16441), (1394, 15238), (1558, 13634), (1604, 13243), (2788, 7619), (3116, 6817)]