21007312

素因数分解:

$2^4\times {\mathrm{19}}^2\times {\mathrm{3637}}^1$

素因数の和:3683

約数の個数: 30

約数和(自身を含む): 42968418

約数和(自身を除く): 21961106

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 361, 722, 1444, 2888, 3637, 5776, 7274, 14548, 29096, 58192, 69103, 138206, 276412, 552824, 1105648, 1312957, 2625914, 5251828, 10503656, 21007312]

約数ペア:

[(1, 21007312), (2, 10503656), (4, 5251828), (8, 2625914), (16, 1312957), (19, 1105648), (38, 552824), (76, 276412), (152, 138206), (304, 69103), (361, 58192), (722, 29096), (1444, 14548), (2888, 7274), (3637, 5776)]