641961272

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{21991}}^1$

素因数の和:22127

約数の個数: 32

約数和(自身を含む): 1246946400

約数和(自身を除く): 604985128

約数列:

[1, 2, 4, 8, 41, 82, 89, 164, 178, 328, 356, 712, 3649, 7298, 14596, 21991, 29192, 43982, 87964, 175928, 901631, 1803262, 1957199, 3606524, 3914398, 7213048, 7828796, 15657592, 80245159, 160490318, 320980636, 641961272]

約数ペア:

[(1, 641961272), (2, 320980636), (4, 160490318), (8, 80245159), (41, 15657592), (82, 7828796), (89, 7213048), (164, 3914398), (178, 3606524), (328, 1957199), (356, 1803262), (712, 901631), (3649, 175928), (7298, 87964), (14596, 43982), (21991, 29192)]