21604178

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{631}}^1$

素因数の和:722

約数の個数: 32

約数和(自身を含む): 36858240

約数和(自身を除く): 15254062

約数列:

[1, 2, 17, 19, 34, 38, 53, 106, 323, 631, 646, 901, 1007, 1262, 1802, 2014, 10727, 11989, 17119, 21454, 23978, 33443, 34238, 66886, 203813, 407626, 568531, 635417, 1137062, 1270834, 10802089, 21604178]

約数ペア:

[(1, 21604178), (2, 10802089), (17, 1270834), (19, 1137062), (34, 635417), (38, 568531), (53, 407626), (106, 203813), (323, 66886), (631, 34238), (646, 33443), (901, 23978), (1007, 21454), (1262, 17119), (1802, 11989), (2014, 10727)]